Sigma 17-50 f2.8 AF speed

Started Jan 16, 2013 | Discussions thread
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546xatnep Regular Member • Posts: 117
Re: Sigma 17-50 f2.8 AF speed

I just got mine today and also noticed that the AF is very quiet, but very slow.  It actually seems slightly faster on the K10 than the K5.  My 18-55 kit lens is blazing fast by comparison.  I haven't had time to really test it much, but it seems to be ok at locking on and there's no obvious FF/BF.  Plan to test more as soon as possible.

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