Photographing under water

Chotie

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Mar 12, 2004, 4:39:24 AM3/12/04

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Hello.

When photographing under water i have heard that it is sometimes used som
colored filter.

I would like to test this out myself. Please give me a hint in what colored
filter i could
try out in underwater photographing.

Thank you for helping out...

Br,
Christian o.

Jason O'Rourke

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Mar 12, 2004, 7:16:04 AM3/12/04

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In article <40518...@127.0.0.1>, Chotie <ch...@home.removeme.se> wrote:
>When photographing under water i have heard that it is sometimes used som
>colored filter.

Usually a red tint to make up for the even absorption of color as you
descend. Keep in mind this costs you light, and is unnecessary if you
use a strobe.

The maker of your housing is likely to have such a filter available.

--
Jason O'Rourke www.jor.com

Chotie

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Mar 12, 2004, 10:24:00 AM3/12/04

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Hello.

Thank you for your help!
You have taken great pictures underwater! I saw your homepage..
If i were to buy a filter that helps me with the color in green saltwater...
Can you recommend a brand or something?

I appreciate your help very much!!

Thank you.

Br,
Christian O.
==========================================

Chris Quinn

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Mar 12, 2004, 11:13:41 AM3/12/04

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Different filters are needed depending on the water - blue water such as
much of the tropics, pacific etc - you need an orangeish filter.

In green water - Much of north Atlantic etc, you need a magenta filter

Details of some are here:
http://www.camerasunderwater.co.uk/stills/uwcc.html
"Chotie" <ch...@home.removeme.se> wrote in message
news:4051d...@127.0.0.1...

Matthew Endo

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Mar 12, 2004, 6:46:18 PM3/12/04

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Actually, most housing makers don't have such filters available.

Filter source: UR Pro

What brand housing are you using, and what diameter attachment size?

--
Matt
ma...@gol.com

Jason O'Rourke

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Mar 12, 2004, 8:35:09 PM3/12/04

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Matthew Endo <ma...@gol.com> wrote:
>> The maker of your housing is likely to have such a filter available.
>
>Actually, most housing makers don't have such filters available.
>
>Filter source: UR Pro

Isn't that the same end result, Matt? Ikelite includes one in their
kits (yes, is UR Pro) and I thought my canon did, though frankly my
mind is mush at this hour on a friday.

Matthew Endo

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Mar 12, 2004, 10:01:51 PM3/12/04

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Jason O'Rourke <j...@soda.csua.berkeley.edu> wrote:

> >Filter source: UR Pro
>
> Isn't that the same end result, Matt? Ikelite includes one in their
> kits (yes, is UR Pro) and I thought my canon did, though frankly my
> mind is mush at this hour on a friday.

Hi, Jason, it's Saturday here.

Off the top of my head, Sony has a red color one available.

--
Matt
ma...@gol.com

Chot

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Mar 13, 2004, 8:32:23 AM3/13/04

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Hello!

Thank you for your help!

I have a digitalcamera with a underwater house. It is a Olympus c-750
and the house is called PT-018. The underwater house has 67mm for
filters. I want to thank both of you again for helping out.

I think the filter for green water is that one i am looking for. Is this
kind of
filter also available from Canon?

Thanks for helping.

Br,
Christian O.
=========================

Clyde

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Mar 13, 2004, 10:02:14 AM3/13/04

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Chot wrote:

Why do you want a filter at all? A filter will only cut the amount of
light down. The amount of light under water is your most valuable and
scarce tool. i.e. You need all the light you can get.

A filter to correct the color isn't needed with digital editing. Just
adjust the color in Photoshop or whatever tool you use.

Clyde

Chot

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Mar 13, 2004, 2:31:05 PM3/13/04

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Thank you for your answer.

Your answer did not help me though it did not help me
with i was looking for, unfortunately.

I am not the best person to tell you why there are underwater filters
available
on the market. Perhaps someone more skilled on that could help you out.

Thanks anyway.

Br,
Christian O.
=========================

Jason O'Rourke

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Mar 13, 2004, 7:25:12 PM3/13/04

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In article <40536...@127.0.0.1>, Chot <chot(at)home.se> wrote:
>I am not the best person to tell you why there are underwater filters
>available
>on the market. Perhaps someone more skilled on that could help you out.

They exist because the color shift as you descend is not balanced.
You use red and yellow almost immediately, then the rest. Think the
classic ROYGBIV line of the color spectrum from grade school - you
lose colors in that order. The red filter is a cheat that tries
to shift it back. It works to some degree, but as noted, you lose
some light and it's still not precise. Honestly, the notion of
color is not an absolute with UW photography. It's based on depth,
ambient light, and the distance of the subject from your strobe.

Personally, I'd focus more on the purchase of an external strobe.
It will get you a lot more than a red filter will. It might be
more useful for video where there is more light sensitivity, and
no photoshop to fix with later.