Newbie focus question

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Archived from groups: rec.photo.digital (More info?)

 

I have just got a Canon Ixus 40, and am having a go at using the manual
settings, badly, but I am trying!

I want to be able to adjust the focal point (not sure if that is the correct
phrase), so that when I half press the shutter release, I can vary what the
camera focuses on...does that make sense? ie. I want to take a picture of
my cat, looking at it through some foliage of a tree, but when I half press
to focus, the camera focuses only on the tree, as it is closest, and not the
cat?

I can't work out which setting that is, any help please?


Thanks in advance




Chris

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In article <%I3He.10837$SO4.4539@newsfe4-win.ntli.net>,
"Evil Uncle Chris" <chris.macnamara@ntlworld.com> wrote:

> I have just got a Canon Ixus 40, and am having a go at using the manual
> settings, badly, but I am trying!
>
> I want to be able to adjust the focal point (not sure if that is the correct
> phrase), so that when I half press the shutter release, I can vary what the
> camera focuses on...does that make sense? ie. I want to take a picture of
> my cat, looking at it through some foliage of a tree, but when I half press
> to focus, the camera focuses only on the tree, as it is closest, and not the
> cat?

Not sure on the exact make of your camera but auto-focus cameras have a
number of settings that determine how they focus. I can set my Canon
Digital Rebel to take a focus reading on just one spot, or on 7 or 8 all
at once. You may need to read your manual to figure out how to switch
these settings.

Shooting a subject through foliage would be a classic case where
auto-focus gets into trouble. The camera can't tell what YOU want to see
in focus so it takes its reading from the picture as a whole -- the
foliage probably takes up most of the image area so that's what the
camera focuses on, no pun intended. In cases like this, it's probably
just better to switch auto-focussing off and do it by eye.

Sean




--

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Two Weeks. One Shot.
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Reply to Anonymous

Archived from groups: rec.photo.digital (More info?)

 

Evil Uncle Chris wrote:
> I have just got a Canon Ixus 40, and am having a go at using the manual
> settings, badly, but I am trying!
>
> I want to be able to adjust the focal point (not sure if that is the correct
> phrase), so that when I half press the shutter release, I can vary what the
> camera focuses on...does that make sense? ie. I want to take a picture of
> my cat, looking at it through some foliage of a tree, but when I half press
> to focus, the camera focuses only on the tree, as it is closest, and not the
> cat?
>
> I can't work out which setting that is, any help please?

Hi Chris...

Don't know your camera, but for starters in general what
you want to look for is "spot focus"... usually iconized
as a square with a dot in the center of it. Once you've
found and turned it on, center the cat in the viewfinder,
do your half press, then compose your shot. The cat should
then be perfectly exposed at the expense of the tree.

Hopefully others with your model will be more helpful.

Take care.

Ken

Reply to Anonymous

Archived from groups: rec.photo.digital (More info?)

 

On Sun, 31 Jul 2005 12:44:43 GMT, Evil Uncle Chris wrote:

> I have just got a Canon Ixus 40, and am having a go at using the manual
> settings, badly, but I am trying!
>
> I want to be able to adjust the focal point (not sure if that is the correct
> phrase), so that when I half press the shutter release, I can vary what the
> camera focuses on...does that make sense? ie. I want to take a picture of
> my cat, looking at it through some foliage of a tree, but when I half press
> to focus, the camera focuses only on the tree, as it is closest, and not the
> cat?
>
> I can't work out which setting that is, any help please?

The Ixus 40, like most P&S cameras, doesn't have the ability to
focus manually. These cameras usually try to focus on what is
contained in the center of the image (your manual should describe
this). If the cat was isolated this would be easy. But as it's
surrounded by the tree, your Ixus 40 is probably going to focus on
some of the much closer leaves and branches. When you half press
the shutter, the camera not only focuses (and determines the
exposure settings) but it locks them in place. So if you can find
another object to focus on that is approximately the same distance
as the cat, you could focus on it, and they while keeping the
shutter half-depressed, point the camera back towards the cat, and
then take the picture. If this other object that you're using to
pre-focus on causes the picture of the cat to come out too light or
too dark, you'll be able to fix that. One of the Ixus's few manual
controls is exposure compensation, and with that and using an
alternate focus point, you *might* be able to get a nicely focused
picture, assuming that it's not one of those pesky Cheshire's. :)

Reply to Anonymous

Archived from groups: rec.photo.digital (More info?)

 

"ASAAR" <caught@22.com> wrote in message
news:5u0qe19vgndlp7gmns3ff0a1ut0m9eofbr@4ax.com...
> On Sun, 31 Jul 2005 12:44:43 GMT, Evil Uncle Chris wrote:
>
>> I have just got a Canon Ixus 40, and am having a go at using the manual
>> settings, badly, but I am trying!
>>
>> I want to be able to adjust the focal point (not sure if that is the
>> correct
>> phrase), so that when I half press the shutter release, I can vary what
>> the
>> camera focuses on...does that make sense? ie. I want to take a picture
>> of
>> my cat, looking at it through some foliage of a tree, but when I half
>> press
>> to focus, the camera focuses only on the tree, as it is closest, and not
>> the
>> cat?
>>
>> I can't work out which setting that is, any help please?
>
> The Ixus 40, like most P&S cameras, doesn't have the ability to
> focus manually. These cameras usually try to focus on what is
> contained in the center of the image (your manual should describe
> this). If the cat was isolated this would be easy. But as it's
> surrounded by the tree, your Ixus 40 is probably going to focus on
> some of the much closer leaves and branches. When you half press
> the shutter, the camera not only focuses (and determines the
> exposure settings) but it locks them in place. So if you can find
> another object to focus on that is approximately the same distance
> as the cat, you could focus on it, and they while keeping the
> shutter half-depressed, point the camera back towards the cat, and
> then take the picture. If this other object that you're using to
> pre-focus on causes the picture of the cat to come out too light or
> too dark, you'll be able to fix that. One of the Ixus's few manual
> controls is exposure compensation, and with that and using an
> alternate focus point, you *might* be able to get a nicely focused
> picture, assuming that it's not one of those pesky Cheshire's. :)

Here's another idea. Back up the distance from the cat to the leaves and
branches then press the shutter halfway down. Now, move in the same
distance and your focus should be locked on the cat, but with the proper
framing. Since you are getting your exposure from the same area you should
be able to get close, or easily adjust that.
>

Reply to Anonymous

Archived from groups: rec.photo.digital (More info?)

 

On Sun, 31 Jul 2005 16:52:48 -0600, Sheldon wrote:

> Here's another idea. Back up the distance from the cat to the leaves and
> branches then press the shutter halfway down. Now, move in the same
> distance and your focus should be locked on the cat, but with the proper
> framing. Since you are getting your exposure from the same area you
> should be able to get close, or easily adjust that.

Good idea, better even (if there isn't much skylight filtering
between the tree's leaves). But it may leave one very puzzled cat.
:)

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