I will purely concentrate on comparision between F3 and state of art Minolta X-700 (introduced 2 years after Nikon's F3, X-700 was the last high specification MF Minolta, in-depth review are HERE and HERE)
AREN'T THEY SIMILAR?
The similarities doesn't end on the outside, they both have:- nearly identical handling and operation
- similar horizontal-travel shutter
- similar technical specification (of course, F3 a bit forward here)
Technical specification of F3 was, of course top-notch at the time, the clear advantages over X-700 are:
- wider shutter speeds range 8 seconds to 1/2000
- interchangeable finders and focus screens
- mirror lock up
- T time for extra long exposures
- mechanical shutter release
Minolta X-700 was of course MUCH cheaper than Nikon, but still have some advantages over F3:
- NORMAL HOT SHOE
- fully automatic P mode
- no need to remove a cap to connect the Motor Drive (which really is pida in F3)
- build-in vertical shutter release in MD1
As for today, each of them have one additional advantage over the contestor:
You can use virtually every ever produced Nikkor lens with F3, what makes it a nice companion to modern DSLR. You can't do it with X-700. Minolta dropped the MD mount with introduction of AF Dynax/Maxxum series.
The PRICE of the lenses, otoh, speaks clearly pro Minolta - you can buy this wonderful 50mm 1.7 Rokkor for next to nothing, whereas a similar Nikkor is like $100.