DFA50 macro
Very slight vignetting, aberration almost non existant, distorsion almost null, excellent perofmance from wide open, dimishes slightly at f/11, really noticeable from f/22.
They ask for an SDM version. Superb lens but mechanical quality so-so...
Rating: 5/5
FA*85/1.4
Very noticeable vignetting at f/1.4, less at f/2, never null but negligable upward. slight chromatic aberration, performance OK at f/1.4, very good at f/2 and excellent from f/2.8
Rating 5/5
FA 135/2.8
Vignetting negligable, amazingly low chromatic aberration, no distorsion at all in practice, excellent performance from wide open, diffraction dimishes performance at f/22. They like it very very much
Rating 5/5.