I'd like to be in the Exuma Cays.... a couple of weeks at Jess and France's StanielRents but, for now, I'm in Virginia Beach replacing a pool sand filter with one using D.E.. I checked the D.E. viz with my Dummy Fish and it works. If you go to stanielrents.com, the girl in the video is France. You can also check their gremlymedia.com for their Great White Shark session.
Reef Photo & Video Nauticam, Zendome 230mm, Canon EOS-5D MkIII, 16-35mm f2.8 (at 35mm), dual Ikelite DS-161 for fill.
Don't let your eyes glaze over; some of you will want to know this. Underwater photographers frequently encounter particulate in the water that can appear as hundreds (thousands?) of white spots in a picture when lights strike them. I've been having almost unbearable backscatter (the white dots) shooting in the pool and, yesterday, took steps to improve the situation by replacing a SAND filter with the pictured D.E. (diatomaceous earth) filter. Sand filters remove particles down to 70-100 microns (for perspective, a human hair is about 75 microns). The D.E. filter will filter particles down to 3-5 MICRONS, so starting today, shooting sessions should be significantly better. Get the picture?