yes but white balance can be changed if you shoot in raw and edit them using photoshop or other programs that allow custom white balance and colour temp manipulation.
oh that and autofocus doesn't work that well most of the time with tanks I have found,,, manual focus ftw
canon is nice but people complain about a softness to photos,, nikon puts out some amazingly crisp and colourful photos,
pentax is slowly breaking into the market but has problems with lowlight photos with noise in the photos.
oh and awsome projects these make me want more reef tanks
