[Photography] 16:9

I want to get into photographing at a 16:9 aspect ratio.

When composing for 4:3, the rule of thumb is to divide your image into a 3x3 grid, and keep a distinct element of the picture in each grid component. I suspect that, in a 16:9 aspect ratio, the composition rule might best change to 5x3. I already know how I'd want to use the six extra grid squares in various centered and offset scenarios.

Anyone know of anamorphic lenses for photography? I haven't upgraded from my FujiFilm Finepix yet, so I'm pretty flexible as far as compatibility...