
Review Summary
2008-07-22T21:00:00
When I upgraded to the Pentax K20D I didn't buy a kit lens. I purchased this lens instead and have been very happy with the purchase. I just visited my family on vacation, and because of the short trip took only this lens. I found it was all I needed for the trip. The pictures came out very sharp, and full of contrast. I really like the Macro capability and used it several times. The fast F2.8 speed at wide angle was also good for indoor shots without flash. The down side is I often have a hard time getting the lens hood on the lens. It's a good hood, just hard to mount for me. I like it over the Pentax 17-70mm F4 as it's faster at wide angles and the Pentax does not have the Macro function.
Louis W.
2008-03-16T21:00:00
This is a very sharp lens. With the shake reduction on the Pentax k100D and k10D you'll get extremely sharp photos throughout the whole zoom and aperture range. The focus is not superfast, but accurate. With wide angle is some distortion that is corrected in Photoshop in less than a minute. The zoom range is very convenient and the semi-macro is great bonus.
ERIC S.
2008-01-20T19:00:00
extremely sharp
WILLIAM B.
2007-11-01T21:00:00
May not be EX, but very very good. I use it with my K100D all the time. The tele coverage is great, and once you figure out what this lens is good at, you can get really good pictures in the entire aperture range. The only time I thought of another lens was in a dimly lit wedding. They powerlines had burnt and they had the ceremony with a generator. Chances are you will not have that happen too often.
Dhruba C.
Great lens when you can only carry one!
By Louis W.
When I upgraded to the Pentax K20D I didn't buy a kit lens. I purchased this lens instead and have been very happy with the purchase. I just visited my family on vacation, and because of the short trip took only this lens. I found it was all I needed for the trip. The pictures came out very sharp, and full of contrast. I really like the Macro capability and used it several times. The fast F2.8 speed at wide angle was also good for indoor shots without flash. The down side is I often have a ...
View full Review
Very Sharp/Perfect Zoom Range/Semi-Macro
By ERIC S.
This is a very sharp lens. With the shake reduction on the Pentax k100D and k10D you'll get extremely sharp photos throughout the whole zoom and aperture range. The focus is not superfast, but accurate. With wide angle is some distortion that is corrected in Photoshop in less than a minute. The zoom range is very convenient and the semi-macro is great bonus.
Sigma Corporation is pleased to announce the launch of the new 17-70mm F2.8-4.5 DC MACRO lens.
It can be used with wide variety of subjects and it is an ideal large aperture standard zoom lens for digital SLR cameras featuring APS-C size image sensor.
This lens has a minimum focusing distance of 7.9.. (20cm) throughout the entire zoom range. Maximum magnification of 1:2.3 enables close-up photography like a macro lens. The new lens design and multi layer lens coating reduce flare and ghosting, which is a common problem with digital cameras. A Special Low Dispersion (SLD) lens and two aspherical lens elements provide excellent correction for all types of aberrations and produce a high level of optical performance throughout the entire zoom range.
This lens offers a large aperture of F2.8 at 17mm wide angle and yet it is compact, with an overall length of 82.5mm (3.2..) and diameter 79mm (3.1..). It performs superbly even in relatively low light conditions indoors or at dusk.
The lens design incorporates an inner focusing system, which ensures fast AF speed as well as prevents the front of the lens rotating, making it particularly suitable for use with circular polarizing filters and petal shaped lens hoods. This lens is also equipped with Zoom Lock Switch that eliminates ..Zoom Creep.. during transportation.
Join VIP PRO
2 Day Delivery on thousands of items!
Request a Callback
Chat one-on-one with an expert
Sell or Trade your Gear
Get started in 3 easy steps