I've looked through a few past threads on similar topics, but didn't find a satisfactory answer. I do mostly landscape/architectural work, so I'm looking for a 300mm 4x5 lens that will allow coverage for good movement, great sharpness edge to edge, and as little distortion as possible above all. I like the compact size of the nikon 300mm f/9, but I hear the distortion can be pretty bad. I want to be able to shoot pretty close if necessary (~6-8ft or closer). God, I hope I can avoid filter sizes exceeding 82mm. Interested to hear your input.