My camera is a P&S that wasnt terribly expensive.Most of the outside the tank shots I do with a tripod. That makes a huge difference. The close ups and top downs are done with the camera in the tank and obviously I end up rattling off a few shots, trying to get non-blurry and subject centered pictures.
Crappy pics is better than noooo pics.

On that note.... heres a couple crappy actinic shots.

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260g mixed reef, 105g sump, water blaster 7000 return, Bubble King SM 300 skimmer, Aqua Controller Jr, 4 radions, 3 Tunze 6055s,1 tunze 6065, 2 Vortech MP40s, Vortech MP20, Tunze ATO, GHL SA2 doser, 2 TLF reactors (1 carbon, 1 rowa).
http://www.canreef.com/vbulletin/showthread.php?t=50034 . Tank Video here
http://www.vimeo.com/2304609 and here
http://www.vimeo.com/16591694