I bought the Nikon F in 1959 when it came out. I used for years. In 1973 I added a Nikon F2. Kept using both. When the F3HP came out, took me a while to take the jump. I didn't want a camera with batteries. Finally I relented after Nikon made the Nikon F2 more expensive than the F3. Later came the FM, FE, FE2, FM2, F4, FM3A, etc. They are all still working.