OK! I am going to bite the bullet and buy a 65mm lens for 4x5 that is better than the SK 65mm f8 that I have now. Any comparisons between the Fuji 65mm SWD f 5.6 and the Nikon 65mm f4? I have compared specs on both, but would like real experience on issues like exposer fall off, etc. I will probably seldom use this focal length, but would like to have the best. Thanks!!