After calibration, it's perfect? Hmm, I really hope so though.. So far what I heard, the calibration helps the focusing problem in short distance, but for longer distance, the focusing problem will still there. That's what worries me the most.
well..as i stated above,i dont have the 50 but do have the sigma 30.after the calibration its been perfect! focus is fast and dead on. the 50 and the 30 is quite similar in sharpness,color and contrass.
maybe this would help,it's not compared directly to nikon 50 but maybe you'll get the idea. >> http://www.pbase.com/lightrules/50f14ex
sigma 30 1.4

I believe I had hit the jackpot, as I have no focussing problem with my Sigma 50 f1.4. Hurray!
congrats! hope your loving yours as i love mine:heart:
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