steven gold

Thank you Autopsea. Regarding post processing, your version definitely gives better contrast. I'll play some more with the original RAW image in Lightroom and PS.

Regarding in camera WB setting, I read in Martin Edge's book that he takes an UW shot of a white or grey scuba tank or his palm or some other standard to help with white balance. I presume he uses automatic white balance.

Shooting RAW, is Automatic WB the best setting, if the UW subject is strobe illuminated - or should the setting be otherwise ?

Thanks for any thoughts on this matter.

Thanks. I actually have the book, and on rereading an early section on white balance last night, I noticed the author recommends taking a (depth dependent) initial shot of the palm of the hand to assist in white balance adjustment of RAW files in Lightroom. Great idea.

I also noticed a section on applying HDR software to UW images, and I shall try that on this image to see if I can get some more detail in the darkened reef areas.

Especially with small sensors, you must keep the ISO as low as possible. Turning it up, dramatically drops the dynamic range, basically 1EV for every 100 iso.

Thanks for the information. I wondered why ISO 200 is recommended for UW shots with this camera.
(I had thought I would get more aperture flexibility at ISO 400, but I will divest of this notion.)

With regards to white balance, above water I usually use automatic white balance setting, in camera, and eyeball the white balance adjustment in Lightroom.  I am, however, so new to underground scenery that I have a lot of trouble with identifying appropriate white balance adjustment. Any tips ??