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| p.3 #6 · RhinoCam: 645 Medium Format back with Sony NEX body! |
My 80/2.8 is great on my Hasselblads, but not exactly outstanding on my 35mm cameras. Since the smaller formats require more resolution...
I guess it really depends on which lenses you're considering. At common apertures on FF DSLR, my Mamiya C 80/2.8N is just as sharp as, or sharper than, the Contax Zeiss Planar 85/1.4, Canon 85/1.2L II, and Leica-R 90/2. I've found similar results with M645 lenses at 35mm, 55mm, 120mm, 150mm, 200mm, and 300mm focal lengths.
I also found that the Hassy Distagon T* CF 50/4 and Planar CF T* 80/2.8 had similar, superior performance, in that they were as good as many of the best 35mm format lenses. I decided to stick with M645 lenses because they're generally smaller, lighter, and less expensive.