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Old Aug 24, 2009, 4:30 PM   #21
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Originally Posted by mtngal View Post
The fact that you can't MANUALLY focus it and get something sharp makes me question whether the problem is the SDM/AF mechanism at all - it may be, but then it may not be. My first copy of the DA 55-300, a non-SDM lens, was a piece of junk, too. It wasn't sharp at all until about f16 or so. It focused all right, but the lens had bad optics.

On the other hand, I now have 3 outstanding lenses that are SDM. We'll see today if the replacement DA*16-50 is any better than the first one I returned.
Hope it works out well for you!
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