Geneva, I shoot 180deg through the front glass. Slight change in angle will produce distortion (optics). I have a waterproof point-n-shoot cam that I've tried a few times but quality is not as good as my DSLR.Nav - beautiful pictures. I know this is dumb but are you shooting through glass and / or from the top through water with a special attachment like they do at fish stores online? I can't tell but are you getting any purple coralline on your rocks yet? Again, beautiful tank and beautiful pictures!!
Yes, coralline has started to grow very well, lots of 0.5" - 1" patches all over my rock. Some of it are so pink that it glows in full actinics