06-06-2013, 12:21 PM
Which is more important; the results you get from the field or the test MTF ?
Ok maybe this is a bit of a loaded question; but I sometime wonders if testing spoils a good lens (I'm not claiming the 17f1.8 is a good lens but I'm sure there are a few nice lenses out there that test lower than less nice lens (where 'nice' represents field results vs test scores).
Ok maybe this is a bit of a loaded question; but I sometime wonders if testing spoils a good lens (I'm not claiming the 17f1.8 is a good lens but I'm sure there are a few nice lenses out there that test lower than less nice lens (where 'nice' represents field results vs test scores).
Quote:Hmmmh, while I liked the lens in the field, the MTFs are not that hot.
There is some heavy distortion correction going on which spoils the game.