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DSLRs and underwater photography

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Anonymous   08-21-2005 at 05:15:23 AM

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

 

Just curious about how people frame, since you can't get close enough to
the viewfinder because of the diving mask.
--

Alfred Molon
------------------------------
Olympus 4040, 5050, 5060, 7070, 8080, E300 forum at
http://groups.yahoo.com/group/MyOlympus/
Olympus E300 resource - http://myolympus.org/E300/

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Anonymous   08-21-2005 at 11:22:40 AM
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Archived from groups: rec.photo.digital (More info?)

 

On Sat, 20 Aug 2005 23:15:23 +0200, Alfred Molon wrote:

> Just curious about how people frame, since you can't get close enough to
> the viewfinder because of the diving mask.
Wire frame and/or guesswork.
--
Neil
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Anonymous   08-21-2005 at 04:33:24 PM
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Archived from groups: rec.photo.digital (More info?)

 

In article <pan.2005.08.21.05.22.33.640111@btopenworld.com>, Neil
Ellwood says...

> > Just curious about how people frame, since you can't get close enough to
> > the viewfinder because of the diving mask.
> Wire frame and/or guesswork.

What is wire frame ?
--

Alfred Molon
------------------------------
Olympus 4040, 5050, 5060, 7070, 8080, E300 forum at
http://groups.yahoo.com/group/MyOlympus/
Olympus E300 resource - http://myolympus.org/E300/

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Anonymous   08-22-2005 at 05:30:01 AM
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Archived from groups: rec.photo.digital (More info?)

 

Based from a friend that is a longtime fun diver and uses film camera for
his dives last time,
underwater photography was more of a guess work for him til he replaces his
film cam with consumer digicam that eases his life A LOT.
But now he has DSLR and still procuring the purchase of a Subal 20D housing,
and probably ... be another guesswork again :D

=bob=

"Alfred Molon" <alfredREMOVE_molon@yahoo.com> wrote in message
news:MPG.1d71bbd881e6092e98acec@news.supernews.com...
> Just curious about how people frame, since you can't get close enough to
> the viewfinder because of the diving mask.

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Anonymous   08-21-2005 at 09:51:06 PM
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Archived from groups: rec.photo.digital (More info?)

 

"Alfred Molon" <alfredREMOVE_molon@yahoo.com> wrote in message
news:MPG.1d725abb2d01b4b598acee@news.supernews.com...
> In article <pan.2005.08.21.05.22.33.640111@btopenworld.com>, Neil
> Ellwood says...
>
>> > Just curious about how people frame, since you can't get close
>> > enough to
>> > the viewfinder because of the diving mask.
>> Wire frame and/or guesswork.
>
> What is wire frame ?

Like a sports-finder. It's usually a frame mounted on top of the
housing with the right aspect ratio, obviously having significant
parallax for objects at shorter distance. You look at it from a
distance and get an approximate view of what's within the camera's
field-of-view (while keeping a view on things about to be moving into
the FoV).

Bart

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Anonymous   08-22-2005 at 01:21:02 AM
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Archived from groups: rec.photo.digital (More info?)

 

On Sun, 21 Aug 2005 10:33:24 +0200, Alfred Molon wrote:

> In article <pan.2005.08.21.05.22.33.640111@btopenworld.com>, Neil
> Ellwood says...
>
>> > Just curious about how people frame, since you can't get close enough to
>> > the viewfinder because of the diving mask.
>> Wire frame and/or guesswork.
>
> What is wire frame ?
You must be too young :-)
A wire frame viewfinder is of a type that used to be used for sports and
quick moving photography, very often made by the photographer themselves.
They also had a vogue in the 1960's for underwater use as the underwater
housing didn't allow a very good viewfinder use. The wire frame is much
easier to use but the lens has to be set on the focal length used for the
viewfinder and on the focal distance that is convenient for that
viewfinder.

Sorry that I haven't explained it very well but it is quite a large
subject.

--
Neil
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Reply to Anonymous
Anonymous   08-22-2005 at 11:06:24 AM
- 0 +

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

 

carl.elllwood2@btopenworld.com (Neil Ellwood) wrote:
> The wire frame is much easier to use but the lens has to be set
> on the focal length used for the viewfinder and on the focal
> distance that is convenient for that viewfinder.

Given the way water plays with focal lengths, I can't imagine there
being a lot of people eager to take zoom lenses underwater when a
nice wide prime would probably work better, so focal length in mm
might not be that big of an issue.

Getting the focal _distance_ right is still the tricky bit, although
you might be able to get by with a decent AF lens if the subject
isn't too close.

--
Dan Birchall - http://danbirchall.multiply.com/ - images, words, technology

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