I appears that not many people are using the Nikon 85mm Micro underwater. I'd like to hear from those that do use it or have tried it. Does it work well? Are there down sides? The f/3.5 max aperture is often cited as a concern, but I can't imagine it being too much of an issue with macro since I'm normally stopped down for DOF. Everything else about it seems to make it a fairly good choice.