Focal Length 50mm
Equivalent to 76.5mm in 35mm format (when attached to PENTAX APS-C size DSLR cameras)
Lens Mount PENTAX KAF mount
Model No. 21530
Lens Construction [Elements/Groups] 8 elements in 7 groups (two aspherical lens)
Angle of View 31.5º (47 degrees with film SLR)
Min. Aperture (f) F32
Min. Focusing Distance 0.195 m
Max. Magnification 1X
Filter Size 49mm
Diameter & Length (mm) 67mm x 60mm
Weight (g) 265g