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06-19-2011, 05:31 PM   #1
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Which lens to get?

I'm debating the Pentax 16-50 or the Sigma 17-50. I've seen images from both lenses on flickr and see no outstanding IQ differences. But what about focus speed? Other than that it comes down to price VS DA* weather sealing. Any thoughts? BTW I'm shooting a K5 and K20D.

06-26-2011, 11:04 AM   #2
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16-50 is a splendid lens optically but with SDM problems and that's the reason I wont consider it.
06-26-2011, 11:57 AM   #3
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Both are highly regarded. Sigma is thought to be more reliable. But happy campers with DA* are HAPPY campers indeed! Good luck choosing
06-26-2011, 12:16 PM   #4
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Difference in focus speed is negligible.

06-26-2011, 03:59 PM   #5
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From the reviews on B&H, I got the impression the 16-50 was hit or miss as far as SDM goes. That makes me lean towards the Sigma.
06-26-2011, 05:05 PM   #6
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I would go with Sigma.

SDM reliability would be a non-issue with a proper warranty - but Pentax refuses to cover it's own gear.

Make them pay for their sneaky ways!

Besides the 16-50 never *blew me away* as far as IQ goes. It's worth considering if you REALLY need WR.
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