DA 17-70 vs DA 18-135

Started 8 months ago | Discussions thread
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Jim King
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DA 17-70 vs DA 18-135
8 months ago

Most of the reviews I've seen conclude that the DA 17-70 is a better lens than the DA 18-135.  Based on my tests this week on my K-3, I would have to disagree.  My DA 18-135 kicks my DA 17-70 to the curb for sharpness at all focal lengths, even after adjusting the AF (+2) using LensAlign. In addition, my copy of the DA 17-70 shows  decentering. Maybe I have a bad copy and should send it in to CRIS for a rest cure. 

Do any of you folks have data/experience to the contrary?  I can't believe how the reviewers can favor the DA 17-70 over the DA 18-135 based on my test results. I'm about ready to replace it with the new Sigma 17-70 Contemporary, based on PF's comparison review. Hate to lose the ability to autocorrect distortion and CA though...

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Jim King - Retired Colormonger - Suburban Detroit, Michigan, USA; GMT -4h (EDT)
Pentaxian for over 50 years.
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There is hardly anything in the world that some man cannot make a little worse and sell a little cheaper, and the people who consider price only are this man's lawful prey.
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 Jim King's gear list:Jim King's gear list
Fujifilm X20 Leica M9 Ricoh GXR S10 24-72mm F2.5-4.4 VC Ricoh GXR Mount A12 Ricoh GXR A16 24-85mm F3.5-5.5 +18 more
Pentax K-3
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