Posted 27 September 2010 - 06:08 AM
Posted 28 September 2010 - 12:15 AM
Posted 28 September 2010 - 01:22 PM
I'd suspect that the subject and surroundings both absorb light very effectively so you are getting little reflected light onto the subject which means that t has no reflected or 'fill' light from its surroundings so the shadowed area is very dark whilst the lit area is lit much the same as the surroundings. The only real solution is to add a fill in flash and expose to the limit of the raw file's ability to handle highlight detail - this will give you a lighter image which you can darken to provide decent blacks whilst still retaining a brighter overall image. Easier to do than explain! What you don't want is a dark image which will suffer if brightened. Personally I would put the main strobe closer to the subject too (if possible) to make its effect slightly softer and provide a slightly more flatly lit image.
Paul Kay,Canon EOS5DII/1DS3 SEACAM c/w S45, 15, 24L, 60/2.8 (+Ext12II) & 100/2.8 Macros - UK/Ireland Seacam Sales -see marinewildlife
Posted 28 September 2010 - 11:19 PM
You're rigth, the subject is very mimetic. The water is dark (It was raining) even if the depth was really... (5m eeeh 15 feet). I guess if the diffusor has changed anything (one "on" and the other one "off").
I have had two strobes one frome the sligthy up left and one just on the top, distance less than 1/2 foot (both). I was nearly on the bottom (myself I mean) and I could not put on strobe closer (or on the rigth) because of the stones shape.
Thanks indeed for the ideas.