Lens Construction:	12 elements in 11 groups
Angle of view:	90 o (with *istD body)
Diaphragm:	Fully Automatic
Minimum Aperture:	F22
Metering:	TTL open-aperture
Min. Focus Distance:	0.56 ft (0.17m)
Max. Magnification:	0.19X
Filter Diameter:	77mm
Size:	3.3” x 2.7” (83.5 x 69mm)
Weight:	14.8 oz (420g) w/o hood
(No aperture ring)	PENTAX KAF Mount (Metal)