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Pentax SMC DA 17-70 mm f/4 AL (IF) SDM
8.8 out of 10

Pentax SMC DA 17-70 mm f/4 AL (IF) SDM

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Reviews and Problems with Pentax SMC DA 17-70 mm f/4 AL (IF) SDM

Showing 1-10 of 45
Overall 8
8.0

User Review

essuera, pentaxforums.com
14 May 2013
  • Excerpt: Three months have been using this lens. First to K-7, now with the K-5. Somewhat surprising is the amount of criticism about the autofocus. My copy everything works fine.
  • Pros: sharp, picture quality, constant aperture
  • Cons: loose front lens. I sometimes get worried about it. low luminosity
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Overall 6
6.0

User Review

BB_Zone28, pentaxforums.com
30 January 2013
  • Excerpt: Auto focus (AF) uses an "SDM only" motor. Since mine failed, it is only usable as a manual focus (MF) lens.
  • Pros: overall sharpness, versatile zoom range
  • Cons: AF motor(SDM) failed, focus ring slips using in MF
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Overall 8
8.0

User Review

Eli Fanti, pentaxforums.com
26 January 2013
  • Excerpt: I got this lens to replace my 18-55 WR. The autofocus tended to hunt and so I sent it in for repair. That cost me ~100$.
  • Pros: sharpness, contrast, zoom range, constant aperture, very good image quality at f/4 already
  • Cons: SDM failed multiple times on my copy, autofocus tends to hunt at 35-70mm range, CA's could be a little better but can be easily corrected in pp
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Overall 9
9.0

User Review

vrrattko, pentaxforums.com
18 January 2013
  • Excerpt: This is my workhorse lens, its quite versatile, constant aperture is very convenient and is reasonably sharp, although not up to standards set by limiteds.
  • Pros: overall sharpness, colour, sdm, build, constant f4
  • Cons: manual focus, little softer at 70mm, AF at 70mm
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Overall 1
1.0

User Review

hi48, pentaxforums.com
18 January 2013
  • Excerpt: It doesn't focus at all.
  • Pros: None
  • Cons: It doesn't focus
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Overall 9
9.0

User Review

gooseta, pentaxforums.com
14 November 2012
  • Excerpt: Firstly, let me say that the autofocus on this lens is near silent, there is a tiny high pitched sound but that is how sdm works, duh.
  • Pros: sharp, good macro, good handling, quick af, constant f4, good colors
  • Cons: none, could be about $50 cheaper imo.
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Overall 8
8.0

User Review

QBOX, pentaxforums.com
29 September 2012
  • Excerpt: Recommended but with a few issues.
  • Pros: Focal length, constant aperture, accurate AF but see cons, no zoom creep, bokeh at 70mm f4, decent image sharpness, size and weight, very nice lens hood with little wi...
  • Cons: Compared to Canon EF 17-70mm f4 L USM and EOS 40D: turning AF ring extremely annoying and touching it can damage the AF motor during AF, slower AF with noticeably loud...
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Overall 5
5.0

User Review

SRT201, pentaxforums.com
9 September 2012
  • Excerpt: This COULD have been a great lens. Optically the 17-70 has the chops to be an excellent all-purpose wide zoom but it shows a clear "lack of focus" on the part of...
  • Pros: IQ "CAN" be excellent when stopped down a bit
  • Cons: AF accuracy
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Overall 10
10

User Review

khanh_zui, pentaxforums.com
19 April 2012
  • Excerpt: But is it really Kr is no longer effective in 50-70 hunt phenomenon. Perhaps because of K7 AF not as good as I Kr and previous reviews are probably 5 points for K7 but...
  • Pros: zoom range, decent IMQ, near silent AF
  • Cons: AF good Kr,K5 :(
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Overall 9
9.0

User Review

philbaum, pentaxforums.com
17 April 2012
  • Excerpt: The background i read on this lens is that it was built as an extension of the very popular DA 16-45. I do a fair amount of photography for a live performance theatre...
  • Pros: F4,useful range, no creep, size/weight, quiet
  • Cons: Hood gets in the way of AF assist light
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