Ed Sukach
Member
Schneider made Hasselblad lenses - Tele-Arton (?) in at least one instance.If it's not Zeiss (for all formats) or Leica (35mm specific), then it's just not worth it. Personally, I refuse to shoot with any other glass. And you can't tell me there's no difference.
Rodenstock, Cooke, .... a bunch of other non-Blad lenses are pretty damned good as well. There are some wonderful images made with Holgas ... I don't know who makes their lenses...
"CAN'T tell you ..." ?? Pretty obvious. Why should I try?