Pentax smc DA 21mm F3.2 AL Limited

Announced Feb 13, 2006 •
Wideangle prime lens | Pentax KAF
Principal specifications
Lens type Prime lens
Max Format size APS-C / DX
Focal length 21 mm
Image stabilisation No
Lens mount Pentax KAF
Aperture
Maximum aperture F3.2
Minimum aperture F22.0
Aperture ring No
Number of diaphragm blades 7
Optics
Elements 8
Groups 5
Focus
Minimum focus 0.20 m (7.87)
Maximum magnification 0.17×
Autofocus Yes
Motor type Screw drive from camera
Full time manual Yes
Focus notes floating element
Physical
Weight 140 g (0.31 lb)
Diameter 63 mm (2.48)
Length 25 mm (0.98)
Colour Black
Filter thread 49 mm
Hood supplied Yes
Tripod collar No
Other
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