This lens is an indispensable tool for ambitious photographers. With an equivalent focal length of 26-107mm (in 35mm film format) it offers the crucial benefit of additional range when normal "standard" zooms generally extend to 82mm equivalent. Not only the focal length range is remarkable: with the KAF3 lens mount it relinquishes the classical mechanical autofocus drive for the first time in favour of faster and quieter ultrasonic technology. The lens construction: 17 elements in 12 groups, including 2 aspherical lens elements - guarantees of outstanding pictures. Important details, such as fixed aperture throughout the zoom range also provide excellent control.
Smc DA 17-70mm's lens mount is KAF3-type, which means that with K100D, *ist D, *ist DS, and *ist DL, the focus can only be performed manually.
In order to discover the products which are being developped and the ones which are planned, you can download our roadmap in pdf:
To see our K-mount currently available range, please download Lenses & Accessories brochure.
Visit the PENTAX Lens Technology web page to discover more about the PENTAX lens construction.
Read more about the PENTAX Focus Function here.
You can use the PENTAX Lens Glossary to learn more about its features.