How to achieve a realistic blue background???

Hello,

we spent our honeymoon on the Maldives, and did some stunning dives there. One of the highlights were 6-8 Grey Reef and lots of Whitetipreefsharks at Finger Point. I took many pictures of them, unfortunately without flash. How would you process these images in PS? How do I get a nice and realistic blue background? Thanks for your help,

Bernd.

Olympus C4040 in PT-10, no flash, no lenses

How would you process these images in PS? How do I get a nice and realistic blue background?

There is an available "action" for photoshop to correct these types of shots. After using the action, you can then make any other adjustment you feel you need.

The action for Photoshop can be found here:

http://share.studio.adobe.com/fsroot/17261.../underwater.atn

This is an example of ONLY using the action. No other adjustments were made.

BTW, I am not saying this is the best way or the only way.

It is just a very quick easy method that works on many shots of this type.

If you are a Photoshop whiz, you can do much better than this manually!

Thanks for your help. I tried the action on a couple of my photos: it works good with shots not too deep or with flash and the result is very similar to the auto-level-command of PS. But I think its not perfect for "blue in blue"-pictures as the shark above: it looks very strange for me as the whole picture turns violett. How would you manually adjust the picture?

There are some helpful articles here at wetpixel that can help you:

http://www.wetpixel.com/module-pagesetter-...-1-pid-50.phtml

http://www.wetpixel.com/module-pagesetter-...-1-pid-14.phtml