Originally Posted by Pasto
It's the worst lens I every used. I was so unimpressed by my RB lenses (50, 90, 180 all C versions) that I sold my whole kit.
That's probably why Mamiya didn't make many and hardly anyone used the RB system!!
I have 50mm and 180mm C lenses and a 90mm KL lens and cannot fault any of them.
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