Pentax DA 20-40mm Limited lens
Maker | Ricoh Imaging |
---|---|
Lens mount(s) | Pentax KAF3 |
Technical data | |
Type | Zoom |
Focus drive | Brushless DC motor |
Focal length | 20-40mm |
Aperture (max/min) | f/2.8 - f/4.0 |
Close focus distance | 0.28 metres (0.92 ft) |
Max. magnification | 0.2 |
Diaphragm blades | 9 |
Construction | 9 elements in 8 groups |
Features | |
Manual focus override | Yes |
Weather-sealing | Yes |
Lens-based stabilization | No |
Aperture ring | No |
Physical | |
Diameter | 71 millimetres (2.8 in) |
Weight | 283 grams (0.624 lb) |
Filter diameter | 55mm |
Accessories | |
Lens hood | MH-RA55 |
History | |
Introduction | 2013 |
The HD Pentax-DA 20-40mm F2.8-4 ED Limited DC WR is an advanced standard zoom lens for Pentax APS-C DSLR cameras announced by Ricoh on November 6, 2013. Being part of Pentax's Limited series, it features a metal barrel and a comparably small form factor. Within the Limited series, it is the first zoom lens as well as the first lens to feature a silent built-in autofocus motor (DC) and weather resistance (WR).
References
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