Mechanically they seem to be very different, however Boz's site has the same optical diagram for both

http://www.bdimitrov.de/kmp/lenses/primes/short-tele/F100f2.8-Macro.html

http://www.bdimitrov.de/kmp/lenses/primes/short-tele/FA100f2.8-Macro.html


Peter Smekal wrote:

Are there any differences between 100 mm f/2.8 F Macro and 100 mm f2.8 FA
Macro, let's say in optics or mechanics?

Peter, Sweden







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