PRODUCT FEATURES
Focal Length 16-50mm Equivalent to 24.5-76.5mm in 35mm format (when attached to PENTAX APS-C size DSLR cameras)
Maximum Aperture f2.8
Minimum Aperture f22
Lens Construction 16 elements in 10 groups
Angle of View (Diagonal) 83-31.5° (when attached to PENTAX APS-C size DSLR cameras)
Mount KAF4
Minimum Focusing Distance 0.3m (0.98ft.)
Maximum Magnification 0.24x
Filter Diameter 77mm
Diaphragm Control Electromagnetic diaphragm Fully automatic
Number of Diaphragm Blades 9
Rounded diaphragm (16mm: F2.8-5.6 50mm: F2.8-8)
Aperture Ring N/A
Tripod Mount N/A