The "kit" lens revisited, is it as bad as they say?
Last response: in Digital Camera
Archived from groups: rec.photo.digital.slr-systems (More info?)
I have taken 2 pictures, one at f8 and the other at f16 with the following
lenses:
Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
Canon EF 50mm f1,8
Canon EF 24-85 f3,5-4,5
Canon EF 35-80 f4-5,6
Canon EF 24-70 f2,8 L
So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
and a primo pro lens. The "kit" lens is one of the early ones which came
with my Drebel, the newer ones are said to be better. I tried to put all
lenses at 50mm and not move the tripod but there are still some slight
changes from one lens to the other.
The pictures are at http://www.pbase.com/jeandr/50mm_test
Now which is which?
Jean
PS These are all TIFF files and at about 4Mb each so a broadband connection
is better for download. There is no EXIF to make sure no one cheats (unless
I missed something embedded in the files which is quite possible)
I have taken 2 pictures, one at f8 and the other at f16 with the following
lenses:
Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
Canon EF 50mm f1,8
Canon EF 24-85 f3,5-4,5
Canon EF 35-80 f4-5,6
Canon EF 24-70 f2,8 L
So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
and a primo pro lens. The "kit" lens is one of the early ones which came
with my Drebel, the newer ones are said to be better. I tried to put all
lenses at 50mm and not move the tripod but there are still some slight
changes from one lens to the other.
The pictures are at http://www.pbase.com/jeandr/50mm_test
Now which is which?
Jean
PS These are all TIFF files and at about 4Mb each so a broadband connection
is better for download. There is no EXIF to make sure no one cheats (unless
I missed something embedded in the files which is quite possible)
More about : kit lens revisited bad
Archived from groups: rec.photo.digital.slr-systems (More info?)
frederick wrote:
> It's also shot at f8 & f16. The former at an aperture where a lens made
> of recycled coke bottles might be expected to perform well, the latter
> at the level on a 10d where diffraction would be a great leveller of
> results.
It's easy enough to put the sharpest and softest images at each end.
The interior is borderline undecidable -- a machine can probably rank
them though. But who cares? f/8 or f/16, the above differences (with
perhaps the exception of image #5) can be ascribed to simple lack of
focus in the absence of other data.
frederick wrote:
> It's also shot at f8 & f16. The former at an aperture where a lens made
> of recycled coke bottles might be expected to perform well, the latter
> at the level on a 10d where diffraction would be a great leveller of
> results.
It's easy enough to put the sharpest and softest images at each end.
The interior is borderline undecidable -- a machine can probably rank
them though. But who cares? f/8 or f/16, the above differences (with
perhaps the exception of image #5) can be ascribed to simple lack of
focus in the absence of other data.
Archived from groups: rec.photo.digital.slr-systems (More info?)
jean wrote:
> 20% You got one right!
This is the other problem with the test: since only you know the
answers, you can (if you wish) simply make it up as you go along. Who
can tell? You may wish to publish a hash of the results prior to
revealing the 'answer', though this can't remove all doubt.
jean wrote:
> 20% You got one right!
This is the other problem with the test: since only you know the
answers, you can (if you wish) simply make it up as you go along. Who
can tell? You may wish to publish a hash of the results prior to
revealing the 'answer', though this can't remove all doubt.
Archived from groups: rec.photo.digital.slr-systems (More info?)
"jean" <try-to@find.it> wrote in message
news:R%kPe.680$Ld.310640@news20.bellglobal.com...
>I have taken 2 pictures, one at f8 and the other at f16 with the following
> lenses:
>
Lens 1 Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
Lens 2 Canon EF 50mm f1,8
Lens 3 Canon EF 24-85 f3,5-4,5
Lens 4 Canon EF 35-80 f4-5,6
Lens 5 Canon EF 24-70 f2,8 L
Lucky guess?
"jean" <try-to@find.it> wrote in message
news:R%kPe.680$Ld.310640@news20.bellglobal.com...
>I have taken 2 pictures, one at f8 and the other at f16 with the following
> lenses:
>
Lens 1 Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
Lens 2 Canon EF 50mm f1,8
Lens 3 Canon EF 24-85 f3,5-4,5
Lens 4 Canon EF 35-80 f4-5,6
Lens 5 Canon EF 24-70 f2,8 L
Lucky guess?
Related ressources
- Good general purpose lens for Nikon D50 (?) - Forum
- Just to add fuel to the debate about the canon kit lens - Forum
- Someone tested Canon's kit lens - Forum
- Spot the 18-55mm Canon ' kit ' lens ? - Forum
- Canon 300D kit lens colours - Forum
Archived from groups: rec.photo.digital.slr-systems (More info?)
20% You got one right!
Jean
"Dave R knows who" <kilbyfan@spamnotAOL.com> a écrit dans le message de
news:V6qPe.10595$p%3.41171@typhoon.sonic.net...
>
> "jean" <try-to@find.it> wrote in message
> news:R%kPe.680$Ld.310640@news20.bellglobal.com...
> >I have taken 2 pictures, one at f8 and the other at f16 with the
following
> > lenses:
> >
>
> Lens 1 Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> Lens 2 Canon EF 50mm f1,8
> Lens 3 Canon EF 24-85 f3,5-4,5
> Lens 4 Canon EF 35-80 f4-5,6
> Lens 5 Canon EF 24-70 f2,8 L
>
> Lucky guess?
>
>
20% You got one right!
Jean
"Dave R knows who" <kilbyfan@spamnotAOL.com> a écrit dans le message de
news:V6qPe.10595$p%3.41171@typhoon.sonic.net...
>
> "jean" <try-to@find.it> wrote in message
> news:R%kPe.680$Ld.310640@news20.bellglobal.com...
> >I have taken 2 pictures, one at f8 and the other at f16 with the
following
> > lenses:
> >
>
> Lens 1 Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> Lens 2 Canon EF 50mm f1,8
> Lens 3 Canon EF 24-85 f3,5-4,5
> Lens 4 Canon EF 35-80 f4-5,6
> Lens 5 Canon EF 24-70 f2,8 L
>
> Lucky guess?
>
>
Archived from groups: rec.photo.digital.slr-systems (More info?)
You can doubt my honesty if you want, but why should I fudge the results? I
have nothing to gain or to lose. Since I don't want to drag this on for
months, I can tell you right off that the only person bold enough to venture
a guess had lens 4 right.
Jean
<eawckyegcy@yahoo.com> a écrit dans le message de
news:1125012609.268809.16950@g44g2000cwa.googlegroups.com...
> jean wrote:
>
> > 20% You got one right!
>
> This is the other problem with the test: since only you know the
> answers, you can (if you wish) simply make it up as you go along. Who
> can tell? You may wish to publish a hash of the results prior to
> revealing the 'answer', though this can't remove all doubt.
>
You can doubt my honesty if you want, but why should I fudge the results? I
have nothing to gain or to lose. Since I don't want to drag this on for
months, I can tell you right off that the only person bold enough to venture
a guess had lens 4 right.
Jean
<eawckyegcy@yahoo.com> a écrit dans le message de
news:1125012609.268809.16950@g44g2000cwa.googlegroups.com...
> jean wrote:
>
> > 20% You got one right!
>
> This is the other problem with the test: since only you know the
> answers, you can (if you wish) simply make it up as you go along. Who
> can tell? You may wish to publish a hash of the results prior to
> revealing the 'answer', though this can't remove all doubt.
>
Archived from groups: rec.photo.digital.slr-systems (More info?)
"jean" <try-to@find.it> wrote:
>I have taken 2 pictures, one at f8 and the other at f16 with the following
>lenses:
>
>Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
>Canon EF 50mm f1,8
>Canon EF 24-85 f3,5-4,5
>Canon EF 35-80 f4-5,6
>Canon EF 24-70 f2,8 L
>
>So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
>and a primo pro lens. The "kit" lens is one of the early ones which came
>with my Drebel, the newer ones are said to be better. I tried to put all
>lenses at 50mm and not move the tripod but there are still some slight
>changes from one lens to the other.
>
>The pictures are at http://www.pbase.com/jeandr/50mm_test
>
>Now which is which?
This only proves one thing: that if the comparator is dumbed-down
shots for web use, it doesn't matter which lens you use. They are all
bad enough.
;-)
"jean" <try-to@find.it> wrote:
>I have taken 2 pictures, one at f8 and the other at f16 with the following
>lenses:
>
>Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
>Canon EF 50mm f1,8
>Canon EF 24-85 f3,5-4,5
>Canon EF 35-80 f4-5,6
>Canon EF 24-70 f2,8 L
>
>So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
>and a primo pro lens. The "kit" lens is one of the early ones which came
>with my Drebel, the newer ones are said to be better. I tried to put all
>lenses at 50mm and not move the tripod but there are still some slight
>changes from one lens to the other.
>
>The pictures are at http://www.pbase.com/jeandr/50mm_test
>
>Now which is which?
This only proves one thing: that if the comparator is dumbed-down
shots for web use, it doesn't matter which lens you use. They are all
bad enough.
;-)
Archived from groups: rec.photo.digital.slr-systems (More info?)
"Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
> "jean" <try-to@find.it> wrote:
>
> >I have taken 2 pictures, one at f8 and the other at f16 with the
following
> >lenses:
> >
> >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> >Canon EF 50mm f1,8
> >Canon EF 24-85 f3,5-4,5
> >Canon EF 35-80 f4-5,6
> >Canon EF 24-70 f2,8 L
> >
> >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
> >and a primo pro lens. The "kit" lens is one of the early ones which came
> >with my Drebel, the newer ones are said to be better. I tried to put all
> >lenses at 50mm and not move the tripod but there are still some slight
> >changes from one lens to the other.
> >
> >The pictures are at http://www.pbase.com/jeandr/50mm_test
> >
> >Now which is which?
>
>
> This only proves one thing: that if the comparator is dumbed-down
> shots for web use, it doesn't matter which lens you use. They are all
> bad enough.
>
> ;-)
? I should have shot raw? I can try it again with 4 lenses this time and
more colors in the picture.
Jean
"Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
> "jean" <try-to@find.it> wrote:
>
> >I have taken 2 pictures, one at f8 and the other at f16 with the
following
> >lenses:
> >
> >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> >Canon EF 50mm f1,8
> >Canon EF 24-85 f3,5-4,5
> >Canon EF 35-80 f4-5,6
> >Canon EF 24-70 f2,8 L
> >
> >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
> >and a primo pro lens. The "kit" lens is one of the early ones which came
> >with my Drebel, the newer ones are said to be better. I tried to put all
> >lenses at 50mm and not move the tripod but there are still some slight
> >changes from one lens to the other.
> >
> >The pictures are at http://www.pbase.com/jeandr/50mm_test
> >
> >Now which is which?
>
>
> This only proves one thing: that if the comparator is dumbed-down
> shots for web use, it doesn't matter which lens you use. They are all
> bad enough.
>
> ;-)
? I should have shot raw? I can try it again with 4 lenses this time and
more colors in the picture.
Jean
Archived from groups: rec.photo.digital.slr-systems (More info?)
On Thu, 25 Aug 2005 18:39:48 -0400, "jean" <try-to@find.it> wrote:
>
>"Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
>news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
>> "jean" <try-to@find.it> wrote:
>>
>> >I have taken 2 pictures, one at f8 and the other at f16 with the
>following
>> >lenses:
>> >
>> >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
>> >Canon EF 50mm f1,8
>> >Canon EF 24-85 f3,5-4,5
>> >Canon EF 35-80 f4-5,6
>> >Canon EF 24-70 f2,8 L
>> >
>> >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
>> >and a primo pro lens. The "kit" lens is one of the early ones which came
>> >with my Drebel, the newer ones are said to be better. I tried to put all
>> >lenses at 50mm and not move the tripod but there are still some slight
>> >changes from one lens to the other.
>> >
>> >The pictures are at http://www.pbase.com/jeandr/50mm_test
>> >
>> >Now which is which?
>>
>>
>> This only proves one thing: that if the comparator is dumbed-down
>> shots for web use, it doesn't matter which lens you use. They are all
>> bad enough.
>>
>> ;-)
>
>? I should have shot raw? I can try it again with 4 lenses this time and
>more colors in the picture.
>
>Jean
>
>
It won't matter what you do, if the results don't agree with the
Canon cranks preconceived opinions, they won't buy it.
It's just outragious to suggest that you have to shoot RAW to
make a comparision when dealing with full sized images.
Unless Canon's JPEG conversion is so terrible, and there is some
evidence it is.
The sad fact is, apart from maybe 2 or 3 lenses, Canon products do
not measure up to the best from Nikon or Olympus. Canon does not
produce lenses to be ultimate image makers, because the main
users of their high quality products are people like sports photogs
and they definitely do not need top quality. They need speed
(f-ratios and focusing) and a good range of focal lengths.
And THAT is who Canon produces equipment for.
-Rich
"Bittorrents are REFUNDS for all the BAD movie products Hollywood
never gave us refunds for in the past"
On Thu, 25 Aug 2005 18:39:48 -0400, "jean" <try-to@find.it> wrote:
>
>"Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
>news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
>> "jean" <try-to@find.it> wrote:
>>
>> >I have taken 2 pictures, one at f8 and the other at f16 with the
>following
>> >lenses:
>> >
>> >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
>> >Canon EF 50mm f1,8
>> >Canon EF 24-85 f3,5-4,5
>> >Canon EF 35-80 f4-5,6
>> >Canon EF 24-70 f2,8 L
>> >
>> >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
>> >and a primo pro lens. The "kit" lens is one of the early ones which came
>> >with my Drebel, the newer ones are said to be better. I tried to put all
>> >lenses at 50mm and not move the tripod but there are still some slight
>> >changes from one lens to the other.
>> >
>> >The pictures are at http://www.pbase.com/jeandr/50mm_test
>> >
>> >Now which is which?
>>
>>
>> This only proves one thing: that if the comparator is dumbed-down
>> shots for web use, it doesn't matter which lens you use. They are all
>> bad enough.
>>
>> ;-)
>
>? I should have shot raw? I can try it again with 4 lenses this time and
>more colors in the picture.
>
>Jean
>
>
It won't matter what you do, if the results don't agree with the
Canon cranks preconceived opinions, they won't buy it.
It's just outragious to suggest that you have to shoot RAW to
make a comparision when dealing with full sized images.
Unless Canon's JPEG conversion is so terrible, and there is some
evidence it is.
The sad fact is, apart from maybe 2 or 3 lenses, Canon products do
not measure up to the best from Nikon or Olympus. Canon does not
produce lenses to be ultimate image makers, because the main
users of their high quality products are people like sports photogs
and they definitely do not need top quality. They need speed
(f-ratios and focusing) and a good range of focal lengths.
And THAT is who Canon produces equipment for.
-Rich
"Bittorrents are REFUNDS for all the BAD movie products Hollywood
never gave us refunds for in the past"
Archived from groups: rec.photo.digital.slr-systems (More info?)
"RichA" <none@none.com> a écrit dans le message de
news:mrlsg1d25pk6bu0n52olus7citquk4ctfq@4ax.com...
> On Thu, 25 Aug 2005 18:39:48 -0400, "jean" <try-to@find.it> wrote:
>
> >
> >"Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
> >news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
> >> "jean" <try-to@find.it> wrote:
> >>
> >> >I have taken 2 pictures, one at f8 and the other at f16 with the
> >following
> >> >lenses:
> >> >
> >> >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> >> >Canon EF 50mm f1,8
> >> >Canon EF 24-85 f3,5-4,5
> >> >Canon EF 35-80 f4-5,6
> >> >Canon EF 24-70 f2,8 L
> >> >
> >> >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
zoom
> >> >and a primo pro lens. The "kit" lens is one of the early ones which
came
> >> >with my Drebel, the newer ones are said to be better. I tried to put
all
> >> >lenses at 50mm and not move the tripod but there are still some slight
> >> >changes from one lens to the other.
> >> >
> >> >The pictures are at http://www.pbase.com/jeandr/50mm_test
> >> >
> >> >Now which is which?
> >>
> >>
> >> This only proves one thing: that if the comparator is dumbed-down
> >> shots for web use, it doesn't matter which lens you use. They are all
> >> bad enough.
> >>
> >> ;-)
> >
> >? I should have shot raw? I can try it again with 4 lenses this time and
> >more colors in the picture.
> >
> >Jean
> >
> >
>
> It won't matter what you do, if the results don't agree with the
> Canon cranks preconceived opinions, they won't buy it.
> It's just outragious to suggest that you have to shoot RAW to
> make a comparision when dealing with full sized images.
> Unless Canon's JPEG conversion is so terrible, and there is some
> evidence it is.
> The sad fact is, apart from maybe 2 or 3 lenses, Canon products do
> not measure up to the best from Nikon or Olympus. Canon does not
> produce lenses to be ultimate image makers, because the main
> users of their high quality products are people like sports photogs
> and they definitely do not need top quality. They need speed
> (f-ratios and focusing) and a good range of focal lengths.
> And THAT is who Canon produces equipment for.
> -Rich
And to me too, I like my Canon stuff. I don't have a Nikon so I can't say
which is better or if it is better.
Jean
>
> "Bittorrents are REFUNDS for all the BAD movie products Hollywood
> never gave us refunds for in the past"
"RichA" <none@none.com> a écrit dans le message de
news:mrlsg1d25pk6bu0n52olus7citquk4ctfq@4ax.com...
> On Thu, 25 Aug 2005 18:39:48 -0400, "jean" <try-to@find.it> wrote:
>
> >
> >"Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
> >news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
> >> "jean" <try-to@find.it> wrote:
> >>
> >> >I have taken 2 pictures, one at f8 and the other at f16 with the
> >following
> >> >lenses:
> >> >
> >> >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> >> >Canon EF 50mm f1,8
> >> >Canon EF 24-85 f3,5-4,5
> >> >Canon EF 35-80 f4-5,6
> >> >Canon EF 24-70 f2,8 L
> >> >
> >> >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
zoom
> >> >and a primo pro lens. The "kit" lens is one of the early ones which
came
> >> >with my Drebel, the newer ones are said to be better. I tried to put
all
> >> >lenses at 50mm and not move the tripod but there are still some slight
> >> >changes from one lens to the other.
> >> >
> >> >The pictures are at http://www.pbase.com/jeandr/50mm_test
> >> >
> >> >Now which is which?
> >>
> >>
> >> This only proves one thing: that if the comparator is dumbed-down
> >> shots for web use, it doesn't matter which lens you use. They are all
> >> bad enough.
> >>
> >> ;-)
> >
> >? I should have shot raw? I can try it again with 4 lenses this time and
> >more colors in the picture.
> >
> >Jean
> >
> >
>
> It won't matter what you do, if the results don't agree with the
> Canon cranks preconceived opinions, they won't buy it.
> It's just outragious to suggest that you have to shoot RAW to
> make a comparision when dealing with full sized images.
> Unless Canon's JPEG conversion is so terrible, and there is some
> evidence it is.
> The sad fact is, apart from maybe 2 or 3 lenses, Canon products do
> not measure up to the best from Nikon or Olympus. Canon does not
> produce lenses to be ultimate image makers, because the main
> users of their high quality products are people like sports photogs
> and they definitely do not need top quality. They need speed
> (f-ratios and focusing) and a good range of focal lengths.
> And THAT is who Canon produces equipment for.
> -Rich
And to me too, I like my Canon stuff. I don't have a Nikon so I can't say
which is better or if it is better.
Jean
>
> "Bittorrents are REFUNDS for all the BAD movie products Hollywood
> never gave us refunds for in the past"
Archived from groups: rec.photo.digital.slr-systems (More info?)
"jean" <try-to@find.it> wrote in message
news:sOrPe.898$Ld.337165@news20.bellglobal.com...
>
> "Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
> news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
> > "jean" <try-to@find.it> wrote:
> >
> > >I have taken 2 pictures, one at f8 and the other at f16 with the
> following
> > >lenses:
> > >
> > >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> > >Canon EF 50mm f1,8
> > >Canon EF 24-85 f3,5-4,5
> > >Canon EF 35-80 f4-5,6
> > >Canon EF 24-70 f2,8 L
> > >
> > >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
zoom
> > >and a primo pro lens. The "kit" lens is one of the early ones which
came
> > >with my Drebel, the newer ones are said to be better. I tried to put
all
> > >lenses at 50mm and not move the tripod but there are still some slight
> > >changes from one lens to the other.
> > >
> > >The pictures are at http://www.pbase.com/jeandr/50mm_test
> > >
> > >Now which is which?
> >
> >
> > This only proves one thing: that if the comparator is dumbed-down
> > shots for web use, it doesn't matter which lens you use. They are all
> > bad enough.
> >
> > ;-)
>
> ? I should have shot raw? I can try it again with 4 lenses this time and
> more colors in the picture.
>
> Jean
You could also show a 100% crop of the same area in each image. Something
with some backlighting in places would be a good way to see vingetting/
color fringing.
"jean" <try-to@find.it> wrote in message
news:sOrPe.898$Ld.337165@news20.bellglobal.com...
>
> "Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
> news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
> > "jean" <try-to@find.it> wrote:
> >
> > >I have taken 2 pictures, one at f8 and the other at f16 with the
> following
> > >lenses:
> > >
> > >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> > >Canon EF 50mm f1,8
> > >Canon EF 24-85 f3,5-4,5
> > >Canon EF 35-80 f4-5,6
> > >Canon EF 24-70 f2,8 L
> > >
> > >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
zoom
> > >and a primo pro lens. The "kit" lens is one of the early ones which
came
> > >with my Drebel, the newer ones are said to be better. I tried to put
all
> > >lenses at 50mm and not move the tripod but there are still some slight
> > >changes from one lens to the other.
> > >
> > >The pictures are at http://www.pbase.com/jeandr/50mm_test
> > >
> > >Now which is which?
> >
> >
> > This only proves one thing: that if the comparator is dumbed-down
> > shots for web use, it doesn't matter which lens you use. They are all
> > bad enough.
> >
> > ;-)
>
> ? I should have shot raw? I can try it again with 4 lenses this time and
> more colors in the picture.
>
> Jean
You could also show a 100% crop of the same area in each image. Something
with some backlighting in places would be a good way to see vingetting/
color fringing.
Archived from groups: rec.photo.digital.slr-systems (More info?)
"Dirty Harry" <nopsam@nojust.com> a écrit dans le message de
news:wvsPe.306559$5V4.230960@pd7tw3no...
>
> "jean" <try-to@find.it> wrote in message
> news:sOrPe.898$Ld.337165@news20.bellglobal.com...
> >
> > "Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
> > news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
> > > "jean" <try-to@find.it> wrote:
> > >
> > > >I have taken 2 pictures, one at f8 and the other at f16 with the
> > following
> > > >lenses:
> > > >
> > > >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> > > >Canon EF 50mm f1,8
> > > >Canon EF 24-85 f3,5-4,5
> > > >Canon EF 35-80 f4-5,6
> > > >Canon EF 24-70 f2,8 L
> > > >
> > > >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
> zoom
> > > >and a primo pro lens. The "kit" lens is one of the early ones which
> came
> > > >with my Drebel, the newer ones are said to be better. I tried to put
> all
> > > >lenses at 50mm and not move the tripod but there are still some
slight
> > > >changes from one lens to the other.
> > > >
> > > >The pictures are at http://www.pbase.com/jeandr/50mm_test
> > > >
> > > >Now which is which?
> > >
> > >
> > > This only proves one thing: that if the comparator is dumbed-down
> > > shots for web use, it doesn't matter which lens you use. They are all
> > > bad enough.
> > >
> > > ;-)
> >
> > ? I should have shot raw? I can try it again with 4 lenses this time
and
> > more colors in the picture.
> >
> > Jean
>
> You could also show a 100% crop of the same area in each image. Something
> with some backlighting in places would be a good way to see vingetting/
> color fringing.
>
Noted.
Jean
"Dirty Harry" <nopsam@nojust.com> a écrit dans le message de
news:wvsPe.306559$5V4.230960@pd7tw3no...
>
> "jean" <try-to@find.it> wrote in message
> news:sOrPe.898$Ld.337165@news20.bellglobal.com...
> >
> > "Tony Polson" <tp@nospam.co.uk> a écrit dans le message de
> > news:gqgsg11l923apnh3t7gef84q685an7qv5n@4ax.com...
> > > "jean" <try-to@find.it> wrote:
> > >
> > > >I have taken 2 pictures, one at f8 and the other at f16 with the
> > following
> > > >lenses:
> > > >
> > > >Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> > > >Canon EF 50mm f1,8
> > > >Canon EF 24-85 f3,5-4,5
> > > >Canon EF 35-80 f4-5,6
> > > >Canon EF 24-70 f2,8 L
> > > >
> > > >So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
> zoom
> > > >and a primo pro lens. The "kit" lens is one of the early ones which
> came
> > > >with my Drebel, the newer ones are said to be better. I tried to put
> all
> > > >lenses at 50mm and not move the tripod but there are still some
slight
> > > >changes from one lens to the other.
> > > >
> > > >The pictures are at http://www.pbase.com/jeandr/50mm_test
> > > >
> > > >Now which is which?
> > >
> > >
> > > This only proves one thing: that if the comparator is dumbed-down
> > > shots for web use, it doesn't matter which lens you use. They are all
> > > bad enough.
> > >
> > > ;-)
> >
> > ? I should have shot raw? I can try it again with 4 lenses this time
and
> > more colors in the picture.
> >
> > Jean
>
> You could also show a 100% crop of the same area in each image. Something
> with some backlighting in places would be a good way to see vingetting/
> color fringing.
>
Noted.
Jean
Archived from groups: rec.photo.digital.slr-systems (More info?)
jean wrote:
>
> And to me too, I like my Canon stuff. I don't have a Nikon so I can't say
> which is better or if it is better.
>
Most of the "canonites" have never used anything but a canon so have NO idea
what else is out there. Many of them started with a Canon autofocus 35mm
and have never used anything else.
--
Stacey
jean wrote:
>
> And to me too, I like my Canon stuff. I don't have a Nikon so I can't say
> which is better or if it is better.
>
Most of the "canonites" have never used anything but a canon so have NO idea
what else is out there. Many of them started with a Canon autofocus 35mm
and have never used anything else.
--
Stacey
Archived from groups: rec.photo.digital.slr-systems (More info?)
jean wrote:
> I have taken 2 pictures,
And could you have blown the highlights out any more? Even the roof of the
house is blown to oblivion!
>
> The pictures are at http://www.pbase.com/jeandr/50mm_test
>
If you want to post a "lens test", post some full rez crops of each one.
--
Stacey
jean wrote:
> I have taken 2 pictures,
And could you have blown the highlights out any more? Even the roof of the
house is blown to oblivion!
>
> The pictures are at http://www.pbase.com/jeandr/50mm_test
>
If you want to post a "lens test", post some full rez crops of each one.
--
Stacey
Archived from groups: rec.photo.digital.slr-systems (More info?)
In article <3n7svoF8a6nU1@individual.net>, Stacey <fotocord@yahoo.com>
wrote:
> Most of the "canonites" have never used anything but a canon so have NO idea
> what else is out there. Many of them started with a Canon autofocus 35mm
> and have never used anything else.
Not me. I wouldn't consider myself a Canonite, but I do own one. But I
come from the film world of medium format - Hasselblad, RB, & Pentax.
In article <3n7svoF8a6nU1@individual.net>, Stacey <fotocord@yahoo.com>
wrote:
> Most of the "canonites" have never used anything but a canon so have NO idea
> what else is out there. Many of them started with a Canon autofocus 35mm
> and have never used anything else.
Not me. I wouldn't consider myself a Canonite, but I do own one. But I
come from the film world of medium format - Hasselblad, RB, & Pentax.
Archived from groups: rec.photo.digital.slr-systems (More info?)
jean top-posts:
>>This is the other problem with the test: since only you know the
>>answers, you can (if you wish) simply make it up as you go along. Who
>>can tell? You may wish to publish a hash of the results prior to
>>revealing the 'answer', though this can't remove all doubt.
>
> You can doubt my honesty if you want, but why should I fudge the results?
I have no idea; why should you? However, now that you are aware of
the problem and a solution that can mitigate it, why not just post a
hash of the document containing the correct answer?
> I have nothing to gain or to lose.
So you claim; and maybe truly, but there is no evidence one way or the
other.
> Since I don't want to drag this on for months, I can tell you right
> off that the only person bold enough to venture a guess had lens 4 right.
Or was it 3 or 1? Who can say?
Recommended reading:
http://en.wikipedia.org/wiki/Anagram - some 17th century astronomers
anagrammed their discoveries to reduce the risk of others claiminng
priority.
http://en.wikipedia.org/wiki/Zero-knowledge_proof - the modern day
equivalent, and one very apropos to your situation.
jean top-posts:
>>This is the other problem with the test: since only you know the
>>answers, you can (if you wish) simply make it up as you go along. Who
>>can tell? You may wish to publish a hash of the results prior to
>>revealing the 'answer', though this can't remove all doubt.
>
> You can doubt my honesty if you want, but why should I fudge the results?
I have no idea; why should you? However, now that you are aware of
the problem and a solution that can mitigate it, why not just post a
hash of the document containing the correct answer?
> I have nothing to gain or to lose.
So you claim; and maybe truly, but there is no evidence one way or the
other.
> Since I don't want to drag this on for months, I can tell you right
> off that the only person bold enough to venture a guess had lens 4 right.
Or was it 3 or 1? Who can say?
Recommended reading:
http://en.wikipedia.org/wiki/Anagram - some 17th century astronomers
anagrammed their discoveries to reduce the risk of others claiminng
priority.
http://en.wikipedia.org/wiki/Zero-knowledge_proof - the modern day
equivalent, and one very apropos to your situation.
Archived from groups: rec.photo.digital.slr-systems (More info?)
Thomas Müller wrote:
>> Autofocus, or manually focused, with good eyesight? If autofocus,
>> forget comparisons.
>
> Why? Maybe he should make 5 Shots, and select the worst, but if I buy an
> autofocus lense, i want the autofocus to work properly.
He should take N shots (N >= 7 or so), each one manually and
_independently_ focused (ie, you completely defocus the image and bring
it back to focus) on the _same target_, and then select the _best_ one
of the set. Repeat for all M lenses.
Better would be to present all NxM images, as they contain valuable
information about the performance of the test (was the tripod any good?
subject motion blur? etc), and lens quality.
Thomas Müller wrote:
>> Autofocus, or manually focused, with good eyesight? If autofocus,
>> forget comparisons.
>
> Why? Maybe he should make 5 Shots, and select the worst, but if I buy an
> autofocus lense, i want the autofocus to work properly.
He should take N shots (N >= 7 or so), each one manually and
_independently_ focused (ie, you completely defocus the image and bring
it back to focus) on the _same target_, and then select the _best_ one
of the set. Repeat for all M lenses.
Better would be to present all NxM images, as they contain valuable
information about the performance of the test (was the tripod any good?
subject motion blur? etc), and lens quality.
Archived from groups: rec.photo.digital.slr-systems (More info?)
"Stacey" <fotocord@yahoo.com> a écrit dans le message de
news:3n7svoF8a6nU1@individual.net...
> jean wrote:
>
>
> >
> > And to me too, I like my Canon stuff. I don't have a Nikon so I can't
say
> > which is better or if it is better.
> >
>
> Most of the "canonites" have never used anything but a canon so have NO
idea
> what else is out there. Many of them started with a Canon autofocus 35mm
> and have never used anything else.
I started out with a Canon TL, and then moved to an FTb. My first digital
SLR was a Drebel and I was dissapointed with it's manual focusing abilities
just as I am with my current DSLR (10D) so I rely on the autofocus. I works
most of the time especially if only one focus point is selected. With
action shots, there is no way I could do better manually, AI servo mode is a
shot saver.
Jean
"Stacey" <fotocord@yahoo.com> a écrit dans le message de
news:3n7svoF8a6nU1@individual.net...
> jean wrote:
>
>
> >
> > And to me too, I like my Canon stuff. I don't have a Nikon so I can't
say
> > which is better or if it is better.
> >
>
> Most of the "canonites" have never used anything but a canon so have NO
idea
> what else is out there. Many of them started with a Canon autofocus 35mm
> and have never used anything else.
I started out with a Canon TL, and then moved to an FTb. My first digital
SLR was a Drebel and I was dissapointed with it's manual focusing abilities
just as I am with my current DSLR (10D) so I rely on the autofocus. I works
most of the time especially if only one focus point is selected. With
action shots, there is no way I could do better manually, AI servo mode is a
shot saver.
Jean
Archived from groups: rec.photo.digital.slr-systems (More info?)
Why not shoot
1) all lenses at f/5.6 and with shutter speed set M so that you can
show the lens wide open (or very close to wide open)and
2) shoot somewhat into the sun so that we can judge flare in the lens,
and
3) focus on a sign with different sizes of text, so that we can judge
the relative resolution, and
4) have signs in the center and at the edges of the frame so that we
can judge center vs. edge performance, and
5) shoot a brick wall so that we can judge the lens for pincushion and
barrel distortion.
The photos you provided at f/8 and f/16 does little to help anyone do
anything but GUESS! It's like going to a party, and playing a game
where you put nylons on the legs of the husbands and have the wives
guess which leg is their own husbands based on the below-the-knee
nylon-clad leg! Few clues to make a reasonable guess.
Why not shoot
1) all lenses at f/5.6 and with shutter speed set M so that you can
show the lens wide open (or very close to wide open)and
2) shoot somewhat into the sun so that we can judge flare in the lens,
and
3) focus on a sign with different sizes of text, so that we can judge
the relative resolution, and
4) have signs in the center and at the edges of the frame so that we
can judge center vs. edge performance, and
5) shoot a brick wall so that we can judge the lens for pincushion and
barrel distortion.
The photos you provided at f/8 and f/16 does little to help anyone do
anything but GUESS! It's like going to a party, and playing a game
where you put nylons on the legs of the husbands and have the wives
guess which leg is their own husbands based on the below-the-knee
nylon-clad leg! Few clues to make a reasonable guess.
Archived from groups: rec.photo.digital.slr-systems (More info?)
jean wrote:
>
> I have taken 2 pictures, one at f8 and the other at f16 with the following
> lenses:
>
> Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> Canon EF 50mm f1,8
> Canon EF 24-85 f3,5-4,5
> Canon EF 35-80 f4-5,6
> Canon EF 24-70 f2,8 L
>
> So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
> and a primo pro lens. The "kit" lens is one of the early ones which came
> with my Drebel, the newer ones are said to be better. I tried to put all
> lenses at 50mm and not move the tripod but there are still some slight
> changes from one lens to the other.
>
> The pictures are at http://www.pbase.com/jeandr/50mm_test
>
> Now which is which?
>
> Jean
>
> PS These are all TIFF files and at about 4Mb each so a broadband connection
> is better for download. There is no EXIF to make sure no one cheats (unless
> I missed something embedded in the files which is quite possible)
Autofocus, or manually focused, with good eyesight? If autofocus,
forget comparisons.
Colin D.
jean wrote:
>
> I have taken 2 pictures, one at f8 and the other at f16 with the following
> lenses:
>
> Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> Canon EF 50mm f1,8
> Canon EF 24-85 f3,5-4,5
> Canon EF 35-80 f4-5,6
> Canon EF 24-70 f2,8 L
>
> So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
> and a primo pro lens. The "kit" lens is one of the early ones which came
> with my Drebel, the newer ones are said to be better. I tried to put all
> lenses at 50mm and not move the tripod but there are still some slight
> changes from one lens to the other.
>
> The pictures are at http://www.pbase.com/jeandr/50mm_test
>
> Now which is which?
>
> Jean
>
> PS These are all TIFF files and at about 4Mb each so a broadband connection
> is better for download. There is no EXIF to make sure no one cheats (unless
> I missed something embedded in the files which is quite possible)
Autofocus, or manually focused, with good eyesight? If autofocus,
forget comparisons.
Colin D.
Archived from groups: rec.photo.digital.slr-systems (More info?)
On Fri, 26 Aug 2005 11:16:07 +1200, Colin D
<ColinD@killspam.127.0.0.1> wrote:
>
>
>jean wrote:
>>
>> I have taken 2 pictures, one at f8 and the other at f16 with the following
>> lenses:
>>
>> Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
>> Canon EF 50mm f1,8
>> Canon EF 24-85 f3,5-4,5
>> Canon EF 35-80 f4-5,6
>> Canon EF 24-70 f2,8 L
>>
>> So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
>> and a primo pro lens. The "kit" lens is one of the early ones which came
>> with my Drebel, the newer ones are said to be better. I tried to put all
>> lenses at 50mm and not move the tripod but there are still some slight
>> changes from one lens to the other.
>>
>> The pictures are at http://www.pbase.com/jeandr/50mm_test
>>
>> Now which is which?
>>
>> Jean
>>
>> PS These are all TIFF files and at about 4Mb each so a broadband connection
>> is better for download. There is no EXIF to make sure no one cheats (unless
>> I missed something embedded in the files which is quite possible)
>
>Autofocus, or manually focused, with good eyesight? If autofocus,
>forget comparisons.
>
>Colin D.
Does that mean autofocus is erratic or never accurate?
-Rich
"Bittorrents are REFUNDS for all the BAD movie products Hollywood
never gave us refunds for in the past"
On Fri, 26 Aug 2005 11:16:07 +1200, Colin D
<ColinD@killspam.127.0.0.1> wrote:
>
>
>jean wrote:
>>
>> I have taken 2 pictures, one at f8 and the other at f16 with the following
>> lenses:
>>
>> Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
>> Canon EF 50mm f1,8
>> Canon EF 24-85 f3,5-4,5
>> Canon EF 35-80 f4-5,6
>> Canon EF 24-70 f2,8 L
>>
>> So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
>> and a primo pro lens. The "kit" lens is one of the early ones which came
>> with my Drebel, the newer ones are said to be better. I tried to put all
>> lenses at 50mm and not move the tripod but there are still some slight
>> changes from one lens to the other.
>>
>> The pictures are at http://www.pbase.com/jeandr/50mm_test
>>
>> Now which is which?
>>
>> Jean
>>
>> PS These are all TIFF files and at about 4Mb each so a broadband connection
>> is better for download. There is no EXIF to make sure no one cheats (unless
>> I missed something embedded in the files which is quite possible)
>
>Autofocus, or manually focused, with good eyesight? If autofocus,
>forget comparisons.
>
>Colin D.
Does that mean autofocus is erratic or never accurate?
-Rich
"Bittorrents are REFUNDS for all the BAD movie products Hollywood
never gave us refunds for in the past"
Archived from groups: rec.photo.digital.slr-systems (More info?)
"Colin D" <ColinD@killspam.127.0.0.1> a écrit dans le message de
news:430E5137.51EEE4E9@killspam.127.0.0.1...
>
>
> jean wrote:
> >
> > I have taken 2 pictures, one at f8 and the other at f16 with the
following
> > lenses:
> >
> > Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> > Canon EF 50mm f1,8
> > Canon EF 24-85 f3,5-4,5
> > Canon EF 35-80 f4-5,6
> > Canon EF 24-70 f2,8 L
> >
> > So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
zoom
> > and a primo pro lens. The "kit" lens is one of the early ones which
came
> > with my Drebel, the newer ones are said to be better. I tried to put
all
> > lenses at 50mm and not move the tripod but there are still some slight
> > changes from one lens to the other.
> >
> > The pictures are at http://www.pbase.com/jeandr/50mm_test
> >
> > Now which is which?
> >
> > Jean
> >
> > PS These are all TIFF files and at about 4Mb each so a broadband
connection
> > is better for download. There is no EXIF to make sure no one cheats
(unless
> > I missed something embedded in the files which is quite possible)
>
> Autofocus, or manually focused, with good eyesight? If autofocus,
> forget comparisons.
Autofocus, good eyesight, 3 shots took the one that looked the best to my
good eyes with reading glasses. At that distance, I would think autofocus
would not be an issue.
Jean
"Colin D" <ColinD@killspam.127.0.0.1> a écrit dans le message de
news:430E5137.51EEE4E9@killspam.127.0.0.1...
>
>
> jean wrote:
> >
> > I have taken 2 pictures, one at f8 and the other at f16 with the
following
> > lenses:
> >
> > Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> > Canon EF 50mm f1,8
> > Canon EF 24-85 f3,5-4,5
> > Canon EF 35-80 f4-5,6
> > Canon EF 24-70 f2,8 L
> >
> > So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
zoom
> > and a primo pro lens. The "kit" lens is one of the early ones which
came
> > with my Drebel, the newer ones are said to be better. I tried to put
all
> > lenses at 50mm and not move the tripod but there are still some slight
> > changes from one lens to the other.
> >
> > The pictures are at http://www.pbase.com/jeandr/50mm_test
> >
> > Now which is which?
> >
> > Jean
> >
> > PS These are all TIFF files and at about 4Mb each so a broadband
connection
> > is better for download. There is no EXIF to make sure no one cheats
(unless
> > I missed something embedded in the files which is quite possible)
>
> Autofocus, or manually focused, with good eyesight? If autofocus,
> forget comparisons.
Autofocus, good eyesight, 3 shots took the one that looked the best to my
good eyes with reading glasses. At that distance, I would think autofocus
would not be an issue.
Jean
Archived from groups: rec.photo.digital.slr-systems (More info?)
jean wrote:
>
> At that distance, I would think autofocus
> would not be an issue.
>
You're assuming none of the lenses front or back focus.
--
Stacey
jean wrote:
>
> At that distance, I would think autofocus
> would not be an issue.
>
You're assuming none of the lenses front or back focus.
--
Stacey
Archived from groups: rec.photo.digital.slr-systems (More info?)
"jean" <try-to@find.it> wrote in message
news:R%kPe.680$Ld.310640@news20.bellglobal.com...
>I have taken 2 pictures, one at f8 and the other at f16 with the following
> lenses:
>
> Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> Canon EF 50mm f1,8
> Canon EF 24-85 f3,5-4,5
> Canon EF 35-80 f4-5,6
> Canon EF 24-70 f2,8 L
>
> So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
> and a primo pro lens. The "kit" lens is one of the early ones which came
> with my Drebel, the newer ones are said to be better. I tried to put all
> lenses at 50mm and not move the tripod but there are still some slight
> changes from one lens to the other.
>
> The pictures are at http://www.pbase.com/jeandr/50mm_test
>
> Now which is which?
>
> Jean
>
> PS These are all TIFF files and at about 4Mb each so a broadband
> connection
> is better for download. There is no EXIF to make sure no one cheats
> (unless
> I missed something embedded in the files which is quite possible)
>
>
>
How about ?
1- 50mm
2-18-55
3- 24-70
4- 24-85
5- 35-80
"jean" <try-to@find.it> wrote in message
news:R%kPe.680$Ld.310640@news20.bellglobal.com...
>I have taken 2 pictures, one at f8 and the other at f16 with the following
> lenses:
>
> Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> Canon EF 50mm f1,8
> Canon EF 24-85 f3,5-4,5
> Canon EF 35-80 f4-5,6
> Canon EF 24-70 f2,8 L
>
> So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
> and a primo pro lens. The "kit" lens is one of the early ones which came
> with my Drebel, the newer ones are said to be better. I tried to put all
> lenses at 50mm and not move the tripod but there are still some slight
> changes from one lens to the other.
>
> The pictures are at http://www.pbase.com/jeandr/50mm_test
>
> Now which is which?
>
> Jean
>
> PS These are all TIFF files and at about 4Mb each so a broadband
> connection
> is better for download. There is no EXIF to make sure no one cheats
> (unless
> I missed something embedded in the files which is quite possible)
>
>
>
How about ?
1- 50mm
2-18-55
3- 24-70
4- 24-85
5- 35-80
Archived from groups: rec.photo.digital.slr-systems (More info?)
"dylan" <no@nowhere.com> a écrit dans le message de
news![:D]( ":D")
emst4$crm$1@news6.svr.pol.co.uk...
>
> "jean" <try-to@find.it> wrote in message
> news:R%kPe.680$Ld.310640@news20.bellglobal.com...
> >I have taken 2 pictures, one at f8 and the other at f16 with the
following
> > lenses:
> >
> > Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> > Canon EF 50mm f1,8
> > Canon EF 24-85 f3,5-4,5
> > Canon EF 35-80 f4-5,6
> > Canon EF 24-70 f2,8 L
> >
> > So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
zoom
> > and a primo pro lens. The "kit" lens is one of the early ones which
came
> > with my Drebel, the newer ones are said to be better. I tried to put
all
> > lenses at 50mm and not move the tripod but there are still some slight
> > changes from one lens to the other.
> >
> > The pictures are at http://www.pbase.com/jeandr/50mm_test
> >
> > Now which is which?
> >
> > Jean
> >
> > PS These are all TIFF files and at about 4Mb each so a broadband
> > connection
> > is better for download. There is no EXIF to make sure no one cheats
> > (unless
> > I missed something embedded in the files which is quite possible)
> >
> >
> >
>
> How about ?
>
> 1- 50mm
> 2-18-55
> 3- 24-70
> 4- 24-85
> 5- 35-80
>
>
40% you got two right. 1 and 3. Now if anyone cares about picking the two
remaining choices (#4 was given in a previous post).
Jean
"dylan" <no@nowhere.com> a écrit dans le message de
news
emst4$crm$1@news6.svr.pol.co.uk...>
> "jean" <try-to@find.it> wrote in message
> news:R%kPe.680$Ld.310640@news20.bellglobal.com...
> >I have taken 2 pictures, one at f8 and the other at f16 with the
following
> > lenses:
> >
> > Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> > Canon EF 50mm f1,8
> > Canon EF 24-85 f3,5-4,5
> > Canon EF 35-80 f4-5,6
> > Canon EF 24-70 f2,8 L
> >
> > So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road
zoom
> > and a primo pro lens. The "kit" lens is one of the early ones which
came
> > with my Drebel, the newer ones are said to be better. I tried to put
all
> > lenses at 50mm and not move the tripod but there are still some slight
> > changes from one lens to the other.
> >
> > The pictures are at http://www.pbase.com/jeandr/50mm_test
> >
> > Now which is which?
> >
> > Jean
> >
> > PS These are all TIFF files and at about 4Mb each so a broadband
> > connection
> > is better for download. There is no EXIF to make sure no one cheats
> > (unless
> > I missed something embedded in the files which is quite possible)
> >
> >
> >
>
> How about ?
>
> 1- 50mm
> 2-18-55
> 3- 24-70
> 4- 24-85
> 5- 35-80
>
>
40% you got two right. 1 and 3. Now if anyone cares about picking the two
remaining choices (#4 was given in a previous post).
Jean
Archived from groups: rec.photo.digital.slr-systems (More info?)
Colin D wrote:
>> Jean
>>
>> PS These are all TIFF files and at about 4Mb each so a broadband
>> connection
>> is better for download. There is no EXIF to make sure no one cheats
>> (unless I missed something embedded in the files which is quite possible)
>
> Autofocus, or manually focused, with good eyesight? If autofocus,
> forget comparisons.
Why? Maybe he should make 5 Shots, and select the worst, but if I buy an
autofocus lense, i want the autofocus to work properly.
Colin D wrote:
>> Jean
>>
>> PS These are all TIFF files and at about 4Mb each so a broadband
>> connection
>> is better for download. There is no EXIF to make sure no one cheats
>> (unless I missed something embedded in the files which is quite possible)
>
> Autofocus, or manually focused, with good eyesight? If autofocus,
> forget comparisons.
Why? Maybe he should make 5 Shots, and select the worst, but if I buy an
autofocus lense, i want the autofocus to work properly.
Archived from groups: rec.photo.digital.slr-systems (More info?)
<eawckyegcy@yahoo.com> a écrit dans le message de
news:1125073335.301585.117380@g43g2000cwa.googlegroups.com...
Thomas Müller wrote:
>> Autofocus, or manually focused, with good eyesight? If autofocus,
>> forget comparisons.
>
> Why? Maybe he should make 5 Shots, and select the worst, but if I buy an
> autofocus lense, i want the autofocus to work properly.
He should take N shots (N >= 7 or so), each one manually and
_independently_ focused (ie, you completely defocus the image and bring
it back to focus) on the _same target_, and then select the _best_ one
of the set. Repeat for all M lenses.
Better would be to present all NxM images, as they contain valuable
information about the performance of the test (was the tripod any good?
subject motion blur? etc), and lens quality.
Now consider the way most people take pictures while on vacation, hand held,
no tripod single or double shots at the most with amny of the grunt taken
over by the camera (autofocus, in AV or TV mode) and ponder how will any
lens shine above the other.
Granted I am happy to own a good one (24-70 f2,8 L) and many of it's
features come in handy most of the time, it is a fast lens, the autofocus is
very fast, but it has it's drawbacks the main ones being the weight and
size. Most people are traumatized by the size, thinking I may be taking
pictures of their nostrils.
Jean
<eawckyegcy@yahoo.com> a écrit dans le message de
news:1125073335.301585.117380@g43g2000cwa.googlegroups.com...
Thomas Müller wrote:
>> Autofocus, or manually focused, with good eyesight? If autofocus,
>> forget comparisons.
>
> Why? Maybe he should make 5 Shots, and select the worst, but if I buy an
> autofocus lense, i want the autofocus to work properly.
He should take N shots (N >= 7 or so), each one manually and
_independently_ focused (ie, you completely defocus the image and bring
it back to focus) on the _same target_, and then select the _best_ one
of the set. Repeat for all M lenses.
Better would be to present all NxM images, as they contain valuable
information about the performance of the test (was the tripod any good?
subject motion blur? etc), and lens quality.
Now consider the way most people take pictures while on vacation, hand held,
no tripod single or double shots at the most with amny of the grunt taken
over by the camera (autofocus, in AV or TV mode) and ponder how will any
lens shine above the other.
Granted I am happy to own a good one (24-70 f2,8 L) and many of it's
features come in handy most of the time, it is a fast lens, the autofocus is
very fast, but it has it's drawbacks the main ones being the weight and
size. Most people are traumatized by the size, thinking I may be taking
pictures of their nostrils.
Jean
Archived from groups: rec.photo.digital.slr-systems (More info?)
<eawckyegcy@yahoo.com> a écrit dans le message de
news:1125072732.660269.98720@g44g2000cwa.googlegroups.com...
> jean top-posts:
>
> >>This is the other problem with the test: since only you know the
> >>answers, you can (if you wish) simply make it up as you go along. Who
> >>can tell? You may wish to publish a hash of the results prior to
> >>revealing the 'answer', though this can't remove all doubt.
> >
> > You can doubt my honesty if you want, but why should I fudge the
results?
>
> I have no idea; why should you? However, now that you are aware of
> the problem and a solution that can mitigate it, why not just post a
> hash of the document containing the correct answer?
OK, I will post another series soon with 4 lenses (my daughter took her
24-85 with her to college) and include a small encoded zip file to which the
key will be given after a few days. I wanted to post pictures with more
colors but the day I took them was rather dull and being a last minute
person, I waited until the last minute when I drove her to the bus station
to take the series of pictures.
Would that be OK?
Jean
> > I have nothing to gain or to lose.
>
> So you claim; and maybe truly, but there is no evidence one way or the
> other.
>
> > Since I don't want to drag this on for months, I can tell you right
> > off that the only person bold enough to venture a guess had lens 4
right.
>
> Or was it 3 or 1? Who can say?
I can, so far lenses identified are:
lens 1 50mm f1,8
lens 2
lens 3 24-70mm f2,8 L
lens 4 35-80mm f4-5,6
lens 5
So lens 2 and lens 4 are either the kit lens or a Canon 24-85 f4,5-5,6. Any
guess? Can't go very wrong, 50% chance of being right without even looking.
Jean
> Recommended reading:
>
> http://en.wikipedia.org/wiki/Anagram - some 17th century astronomers
> anagrammed their discoveries to reduce the risk of others claiminng
> priority.
>
> http://en.wikipedia.org/wiki/Zero-knowledge_proof - the modern day
> equivalent, and one very apropos to your situation.
>
<eawckyegcy@yahoo.com> a écrit dans le message de
news:1125072732.660269.98720@g44g2000cwa.googlegroups.com...
> jean top-posts:
>
> >>This is the other problem with the test: since only you know the
> >>answers, you can (if you wish) simply make it up as you go along. Who
> >>can tell? You may wish to publish a hash of the results prior to
> >>revealing the 'answer', though this can't remove all doubt.
> >
> > You can doubt my honesty if you want, but why should I fudge the
results?
>
> I have no idea; why should you? However, now that you are aware of
> the problem and a solution that can mitigate it, why not just post a
> hash of the document containing the correct answer?
OK, I will post another series soon with 4 lenses (my daughter took her
24-85 with her to college) and include a small encoded zip file to which the
key will be given after a few days. I wanted to post pictures with more
colors but the day I took them was rather dull and being a last minute
person, I waited until the last minute when I drove her to the bus station
to take the series of pictures.
Would that be OK?
Jean
> > I have nothing to gain or to lose.
>
> So you claim; and maybe truly, but there is no evidence one way or the
> other.
>
> > Since I don't want to drag this on for months, I can tell you right
> > off that the only person bold enough to venture a guess had lens 4
right.
>
> Or was it 3 or 1? Who can say?
I can, so far lenses identified are:
lens 1 50mm f1,8
lens 2
lens 3 24-70mm f2,8 L
lens 4 35-80mm f4-5,6
lens 5
So lens 2 and lens 4 are either the kit lens or a Canon 24-85 f4,5-5,6. Any
guess? Can't go very wrong, 50% chance of being right without even looking.
Jean
> Recommended reading:
>
> http://en.wikipedia.org/wiki/Anagram - some 17th century astronomers
> anagrammed their discoveries to reduce the risk of others claiminng
> priority.
>
> http://en.wikipedia.org/wiki/Zero-knowledge_proof - the modern day
> equivalent, and one very apropos to your situation.
>
Archived from groups: rec.photo.digital.slr-systems (More info?)
>> How about ?
>>
>> 1- 50mm
>> 2-18-55
>> 3- 24-70
>> 4- 24-85
>> 5- 35-80
>>
>>
>
> 40% you got two right. 1 and 3. Now if anyone cares about picking the
> two
> remaining choices (#4 was given in a previous post).
>
> Jean
>
>
>
Not too bad then I could spot a good one or two, the others probably depend
on the individual lens. I compared 18-55 to a 24-85 and it depended very
much on focal length and conditions.
Regards your comments about the 10D AF, one thing to be aware of is the
actual coverage of the AF sensors relative to the viewfinder markings. If
you haven't seen the inof before take a look at
http://www.knighttrain.freeserve.co.uk/400.htm . I find the camera will tend
to focus on the extremes of the AF sensor first !
Cheers
>> How about ?
>>
>> 1- 50mm
>> 2-18-55
>> 3- 24-70
>> 4- 24-85
>> 5- 35-80
>>
>>
>
> 40% you got two right. 1 and 3. Now if anyone cares about picking the
> two
> remaining choices (#4 was given in a previous post).
>
> Jean
>
>
>
Not too bad then I could spot a good one or two, the others probably depend
on the individual lens. I compared 18-55 to a 24-85 and it depended very
much on focal length and conditions.
Regards your comments about the 10D AF, one thing to be aware of is the
actual coverage of the AF sensors relative to the viewfinder markings. If
you haven't seen the inof before take a look at
http://www.knighttrain.freeserve.co.uk/400.htm . I find the camera will tend
to focus on the extremes of the AF sensor first !
Cheers
Archived from groups: rec.photo.digital.slr-systems (More info?)
RichA wrote:
>
> On Fri, 26 Aug 2005 11:16:07 +1200, Colin D
> <ColinD@killspam.127.0.0.1> wrote:
>
> >
> >
> >jean wrote:
> >>
> >> I have taken 2 pictures, one at f8 and the other at f16 with the following
> >> lenses:
> >>
> >> Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> >> Canon EF 50mm f1,8
> >> Canon EF 24-85 f3,5-4,5
> >> Canon EF 35-80 f4-5,6
> >> Canon EF 24-70 f2,8 L
> >>
> >> So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
> >> and a primo pro lens. The "kit" lens is one of the early ones which came
> >> with my Drebel, the newer ones are said to be better. I tried to put all
> >> lenses at 50mm and not move the tripod but there are still some slight
> >> changes from one lens to the other.
> >>
> >> The pictures are at http://www.pbase.com/jeandr/50mm_test
> >>
> >> Now which is which?
> >>
> >> Jean
> >>
> >> PS These are all TIFF files and at about 4Mb each so a broadband connection
> >> is better for download. There is no EXIF to make sure no one cheats (unless
> >> I missed something embedded in the files which is quite possible)
> >
> >Autofocus, or manually focused, with good eyesight? If autofocus,
> >forget comparisons.
> >
> >Colin D.
>
> Does that mean autofocus is erratic or never accurate?
> -Rich
>
neither. autofocus is accurate - at least on Canons {:-), but with a
subject containing some depth, like these test shots, with large bushes
in the foreground, an oblique angle on the buildings, and a seven-point
focus system, who knows where the focus was. I wager most people looked
at the roof skyline or chimney, and I bet that wasn't the point of
focus. All this means the shots were demonstrating dof and not much
else.
Colin D.
RichA wrote:
>
> On Fri, 26 Aug 2005 11:16:07 +1200, Colin D
> <ColinD@killspam.127.0.0.1> wrote:
>
> >
> >
> >jean wrote:
> >>
> >> I have taken 2 pictures, one at f8 and the other at f16 with the following
> >> lenses:
> >>
> >> Canon EFs 18-55 f4,5-5,6 ("kit" lens modified to fit on a 10D)
> >> Canon EF 50mm f1,8
> >> Canon EF 24-85 f3,5-4,5
> >> Canon EF 35-80 f4-5,6
> >> Canon EF 24-70 f2,8 L
> >>
> >> So we have 4 zooms, 3 plastic cheapie lenses, one middle of the road zoom
> >> and a primo pro lens. The "kit" lens is one of the early ones which came
> >> with my Drebel, the newer ones are said to be better. I tried to put all
> >> lenses at 50mm and not move the tripod but there are still some slight
> >> changes from one lens to the other.
> >>
> >> The pictures are at http://www.pbase.com/jeandr/50mm_test
> >>
> >> Now which is which?
> >>
> >> Jean
> >>
> >> PS These are all TIFF files and at about 4Mb each so a broadband connection
> >> is better for download. There is no EXIF to make sure no one cheats (unless
> >> I missed something embedded in the files which is quite possible)
> >
> >Autofocus, or manually focused, with good eyesight? If autofocus,
> >forget comparisons.
> >
> >Colin D.
>
> Does that mean autofocus is erratic or never accurate?
> -Rich
>
neither. autofocus is accurate - at least on Canons {:-), but with a
subject containing some depth, like these test shots, with large bushes
in the foreground, an oblique angle on the buildings, and a seven-point
focus system, who knows where the focus was. I wager most people looked
at the roof skyline or chimney, and I bet that wasn't the point of
focus. All this means the shots were demonstrating dof and not much
else.
Colin D.
Archived from groups: rec.photo.digital.slr-systems (More info?)
Thomas Müller wrote:
>
> Colin D wrote:
>
> >> Jean
> >>
> >> PS These are all TIFF files and at about 4Mb each so a broadband
> >> connection
> >> is better for download. There is no EXIF to make sure no one cheats
> >> (unless I missed something embedded in the files which is quite possible)
> >
> > Autofocus, or manually focused, with good eyesight? If autofocus,
> > forget comparisons.
>
> Why? Maybe he should make 5 Shots, and select the worst, but if I buy an
> autofocus lense, i want the autofocus to work properly.
See my answer to Rich about four posts back.
Colin D.
Thomas Müller wrote:
>
> Colin D wrote:
>
> >> Jean
> >>
> >> PS These are all TIFF files and at about 4Mb each so a broadband
> >> connection
> >> is better for download. There is no EXIF to make sure no one cheats
> >> (unless I missed something embedded in the files which is quite possible)
> >
> > Autofocus, or manually focused, with good eyesight? If autofocus,
> > forget comparisons.
>
> Why? Maybe he should make 5 Shots, and select the worst, but if I buy an
> autofocus lense, i want the autofocus to work properly.
See my answer to Rich about four posts back.
Colin D.
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