I can only say that the DA 16-45 result is atypical. Perhaps it was loose on the tripod?

I tested the DA 16-45 against both the DA 40 and the FA 20, at comparable focal lengths. The test subject was a mud-brick wall taken from a meter away or so. The primes were a bit better (at actual pixels) up to f5.6. At f8 the DA 16-45 was as sharp as the primes.

Joe



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