Id start those at %50 blue %25 white for like a week then slowly move them up. I have 3 120 w over my 6 foot tank and run them at %100 blue, %25 white and that's more than enough for my sps
and nem. Those units are really powerfull and if your coral aren't used to it will bleach pretty quick.
I have a Nikon DSLR and the best pics are if my white balance is set at 10000 k
and my iso is turned up to 400 and my shutter speed is really fast. This is the best way to get color to show and not just have blue pictures. Another option is to turn the blues way down to take pics then turn them back up...