Lens mount: PENTAX KAF mount
Aperture control: Automatic
Metering system: TTL open-aperture metering
Number of diaphragm blades: 6
Filter size: n/a
Dimensions (diameter x length): 68 x 71.5mm Weight: 320g
OPTICAL SPECIFICATION
Lens construction: 10 elements in 8 groups
Angle of view: 180?-100? (when used with *istD-Series camera body)
Minimum aperture: F22 - F32
Minimum focusing distance: 0.14m
Maximum magnification: 0.23X - 0.39X
