Pentax DA 21mm F3.2 AL
Specifications:
Lens Mount:: PENTAX KAF mount
Lens Construction:: 8 elements in 5 groups
Angle of View:: 68 degrees (when used with *istD series & K100D body)
Aperture Control:: Automatic
Number of Diaphragm Blades:: 7
Minimum Aperture:: F22
Metering System:: TTL open-aperture metering
Minimum Focusing Distance:: 0.66 ft. (0.2m)
Filter Size:: 43mm or 49mm
Maximum Magnification:: 0.17X
Dimensions:: 2.5" x 1.0" (63mm x 25mm)
Weight:: 4.9 oz. (140g) without hood; 5.5 oz. (155g) with hood
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