PENTAX SMC DA * 16-50MM F2.8 ED/AL (IF) SDM F/K10D/K20D

Specifications

Lens Construction: 15 elements in 12 groups
Angle of View: 83 - 31.5 degrees (when used with PENTAX Digital SLR camera body)
Aperture Control: Automatic
Minimum Aperture: F22
Number of Diaphragm Blades: 9
Metering System: TTL open-aperture metering
Minimum Focusing Distance: 0.3m
Filter Size: 77mm
Maximum Magnification: 0.21X
Dimensions (diameter x length): 3.3" x 3.9" (84mm x 98.5mm)
Weight: 19.9 oz. (565g) without hood; 21.2 oz. (600g) with hood