Love the results I'm getting with the 60mm AF-D on macro, but in crap vis it takes too much working room to shoot decent fish portraits. I have a 35mm f2 AF-D I bought on E-Bay when I first got the camera. I tried it at home in the standard port, and it doesn't vignette and focuses reasonably close. Yet, nobody lists it as a choice for underwater lenses or shows a matching port. Anybody try it? The D300 is a DX, so it should be equivalent to about a 50mm on a full frame.