Smaller format lenses do not "always" beat out their larger bretheren. The
lenses of the Mamiya 7 rangefinder do extremely well. According to
"www.photodo.com" MTF test results, the 80mm Mamiya lens (roughly equivalent
to a 39mm 35 lens) equals most highly regarded 35mmF2.0 and F2.8 lenses in
optical quality over the entire 67 frame! I can attest that the 80mm is
extremely sharp since I own it! In fact, those test results suggest that the
Mamiya 7 lenses (43, 50, 65, 80, 150) now define state of the art for medium
format!
Alex
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