My two Fs are a 1962 model with a plain finder and the selenium clip-on meter and a 1973 FTN. The earlier camera came with a 50/2 Nikkor-S. The FTN finder is brighter than the old plain finder. I have a number of F2s. The one I use most often has the DP-2 and it works well. The only thing I don't like about it is the fact that my eye has to be well centered to see everything properly. If you take a lens like a 200 and point it up at the top of a tall building, you will not see the same distortion in the finder of an F2 that you see with a Nikkormat. Still, I have many Nikkormats and like them. My F3 has the original prism finder and not the HP finder. I prefer the original finder. If I want to use something more modern and with more eye relief, I will use a N90S. I do not wear glasses when I focus through an SLR. What three Canons do I have and can compare to the three Nikons? The original F-1 of 1971, the F-1n of 1976 and the New F-1 of 1981. I have a fleet of these and for most purposes, I prefer them to the three Nikons but for me it's not an either/or proposition. I enjoy using all of them, and many others, at different times and for different subjects.