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05-25-2013, 10:59 AM   #16
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The problem with the 16-45mm is finding one without barrel wobble. We've had some reports that the wobble can be fixed, but I haven't found any explanation of exactly how. The advantage of the 16-45mm vs. the 17-50mm, besides the obvious wide end, may be less focus field curvature at the wide end - it's a significant problem if you photograph any nearly flat subjects. Also there seem to be fewer autofocus accuracy/adjustment issues with the 16-45mm. On the other hand, f2.8 vs. f4 can be significant for some applications, and f2.8 definitely makes manual focus easier.

Paul

05-25-2013, 12:52 PM   #17
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It should be noted that the "barrel wobble" is a cosmetic issue only. It doesn't affect the images. In terms of build, even the DA12-24 seems rather "cheap" for its price, unfortunately.
05-25-2013, 03:06 PM   #18
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If you're going to be doing a lot of shooting at 18mm, get a 15mm Limited. I was also considering buying a 16-45/17-70/17-50/etc to replace my kit lens but honestly? It's not really THAT bad. Sure, it might not be the best thing when a candid moment happens, but I guess if you want to go for the best you'd have to get a Sigma 17-50 or a DA* 16-50, or just go with an expensive prime. The 15mm never fails to amaze me in all aspects (except bokeh -- but who needs it on a 15mm wide lens???)

After buying the 15mm Limited, however, I've been considering the 18-135. Not only does it have better IQ than the kit lens, but it has more range, is more consistent, and has a great autofocus motor/system. I'd go for that since Pentax's 16-45 and 17-70 are both pretty old in comparison. You normally get more for your money with newer lens designs. And WR.
05-25-2013, 06:21 PM   #19
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QuoteOriginally posted by rparmar Quote
It should be noted that the "barrel wobble" is a cosmetic issue only. It doesn't affect the images. In terms of build, even the DA12-24 seems rather "cheap" for its price, unfortunately.
I thought so too, until reading (and posting in) this thread:

https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/216555-advice-...ml#post2324267

and then retesting my own copy. The wobble definitely detracts from the performance of the 16-45mm.

Paul

05-26-2013, 12:36 PM   #20
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Well, that's bad news since I imagine this applies to all the wobbly zooms, of which Pentax has a lot. The only time I shoot Pentax these days is for the DA12-24, so this makes me rethink even that.
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