Originally posted by Asahiflex Y Why buy a fast portrait tele and then use it only stopped down? Likewise I'm not interested in the corner performance of the lenses. If you think I'm wrong then please let me know
I will bite,
First, on APS-C I would not call these portrait primes.
Second, you cannot judge the corner performance on APS-C, sensor is too small.
Third, if you shoot all wide open, and not at the same aperture, what are you comparing ?
Fourth, why buy fast primes and use them stopped down :
In general, a 1.4 lens will be a better lens at 2.0 than a 2.0 lens at 2.0.