Pentax Lens DA 17-70mm f4AL(IF) SDM
When mounted on a PENTAX digital SLR camera body, this zoom lens offers an approximately 4.1-times zoom ratio covering the focal-length range from 26mm wide angle to 107mm telephoto in the 35mm format. It offers the most frequently used focal lengths in day-to-day photography, making it ideal for a host of casual applications, including scenery, snapshot and portraiture.
Thanks to the incorporation of the PENTAX-original SDM system driven by a built-in supersonic motor, this zoom lens offers exceptionally smooth, quiet autofocusing operation. When mounted on an SDM-compatible PENTAX digital SLR camera body,* the focus mode is automatically switched to SDM-assisted autofocusing. Because this zoom lens has been developed exclusively for SDM-assisted autofocusing, it is designed compact and manoeuvrable despite the incorporation of the built-in supersonic motor.
*This lens is compatible with the K20D, K200D, K100D Super and K10D (with Ver. 1.30 or later firmware installed) camera bodies. When mounted on other camera bodies, the focus mode is automatically switched to manual.
Other features
· Minimum focusing distance of 0.28 meters over the entire zoom range
· Inner-Focus (IF) system to eliminate lens extension and retraction during focusing operation
· Quick-Shift Focus System for instant switching to manual-focus operation without any focus-mode changes, after the subject is captured in focus by the AF system
· SP (Super Protect) coating applied to the front surface to repel dust, water and grease
Compatible Accessories
Specifications
|
Lens mount |
PENTAX KAF3 mount |
|
Lens construction |
17 elements in 12 groups |
|
Angle of view |
79° - 23° (with PENTAX D-SLR camera body) |
|
Number of diaphragm blades |
7 |
|
Minimum aperture |
F22 |
|
Minimum focusing distance |
0.28m (0.92 ft.) |
|
Filter size |
67mm |
|
Maximum magnification |
0.31X |
|
Dimensions (diameter x length) |
75mm x 93.5mm (3.0 inch x 3.7 inch) |
|
Weight |
485g (17.1 oz.) without hood; 515g (18.2 oz.) with hood |
* Specifications subject to change by the manufacturer without notice
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