The Konica AR 2.5/135 mm is a relatively fast, large, heavy (630 g) and well-built portrait / theatre lens. While it can well be used at f2.5, it has an excellent performance in the f5.6 ... f11 range. At these apertures, there are nearly no lateral CAs, and the lens perfoms better than e. g. the famous Minolta Rokkor 2.8/135 mm [4/4]. Wide open, however, there are visible CAs.

 

Konica Hexanon AR 135mmf25 section Konica AR 135mmf25 KONICA HEXANON 135mm 1:2.5                 
(4 Linsen / 4 Glieder)