Pentax DA 21mm Limited lens

The Pentax smc DA 21mm F3.2 AL Limited is a moderate wide angle lens announced by Pentax on February 13, 2006. It is one of the five very compact "Limited" prime lenses for APS-C format cameras. Like its siblings, it was replaced in 2013 with a version that is HD-coated and has rounded aperture blades.

Pentax smc DA 21mm F3.2 AL Limited
MakerPentax
Lens mount(s)Pentax K
Technical data
TypePrime
Focus driveScrewdrive
Focal length21mm
Focal length (35mm equiv.)32mm
Aperture (max/min)f/3.2
Close focus distance0.20 metres (0.66 ft)
Max. magnification0.17
Diaphragm blades7
Construction8 elements in 5 groups
Features
Manual focus overrideYes Yes
Weather-sealingNo No
Lens-based stabilizationNo No
Aperture ringNo No
Physical
Max. length25 millimetres (0.98 in)
Diameter63 millimetres (2.5 in)
Weight140 grams (0.31 lb)
Filter diameter49mm
History
Introduction2006

References

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