| | |  | Telephoto | Home » » » » Pentax 17-70mm f/4 DA SMC AL IF SDM Lens for Pentax Digital SLR Cameras | | | | | | | Description: | | PENTAX 21740 17-70mm f/4 AL (IF) SDM Zoom Lens | | | Features: | |
• Equivalent focal length of 26-107mm in 35mm format, when used with digital SLR cameras.
• ED and aspherical elements compensate for chromatic and spherical aberration.
• The image circle of the lens has been created to match the smaller image recording area of digital SLR cameras.
• The Quick-Shift Focus System allows to instantly shift to manual focus once the subject is captured by AF.
| | | Product Details: | | | Product Length:
| 3.0 inches | | Product Width:
| 3.0 inches | | Product Height:
| 3.7 inches | | Product Weight:
| 1.07 pounds | | Package Length:
| 5.75 inches | | Package Width:
| 4.57 inches | | Package Height:
| 4.33 inches | | Package Weight:
| 1.63 pounds | | Average Customer Rating:
|  based on 10 reviews |
| | | | Customer Reviews: | |
Average Customer Review:
 ( 10 customer reviews )
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Most Helpful Customer Reviews
28 of 28 found the following review helpful:
 Almost greatSep 15, 2008
By Alan
I have owned this lens almost from the day it was introduced in the U.S. It has a lot going for it--excellent construction, quiet focusing and a very useful zoom range. Between 17-50mm focal length, it is about as good as you could ever hope a zoom lens could be. The trouble begins above 50mm, where the image is soft at infinity focus, even stopped down to f8. This is not to say that the lens in unusable between 50-70mm. It probably can hold its own against similar lenses, e.g. the Sigma 17-70, which many users like. But if you are a fanatic about IQ, as I am, you may not be fully satisfied.
6 of 6 found the following review helpful:
 Perfect all around lensDec 06, 2010
By BCSAlaska
"AKSmoke"
I have the DA star 16-50, but I much prefer this lens. I have had this on my K7 for a few months, and I find it a near perfect all around lens. Fast, quiet focus. Fairly fast constant f4. Great build quality. Excellent sharpness throughout zoom range with no apparent optical flaws in real life photos. A great lens that has me looking for a buyer for my 16-50.
6 of 6 found the following review helpful:
Wide angle zoom lensMar 04, 2010
By Lyle Johnsen
"Bud"
It's big and heavy, but it takes great pictures on my Pentax K-7. The SDM focus is fast and quiet. The zoom operates silky smooth and there is no "zoom creep".
5 of 5 found the following review helpful:
Pentax Quality for Pentax DSLROct 01, 2009
By R. Jones
"Coffee Hound"
A good solid prosumer lens. The SDM focus motor is so silent, you wonder if it's working until you hear the little confirmation beep and see your subject in shar focus in the VF. A good all around lens. Somewhat heavy, but that's expected for the size of the glass and the sturdy construction. A good lens and sharp at all ranges in the center. A little soft at the edges at the longest 70mm end of the range. Good value for a solid piece of Pentax glass with SDM. Would like to give it a five-star, but that would not do justice to the DA 16-45 which beats it in overall IQ in my opinion.
7 of 9 found the following review helpful:
Pentax 17-70 vs Sigma 17-70Jun 29, 2009
By Reastgo Holmes
"R.Holmes"
This is the best walk around lens on the market . This lens has outstanding range and color. I also like the Sigma 17-70 but the pentax has better glass.
See all 10 customer reviews on Amazon.com
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