Lens Mount PENTAX KAF3 mount
Model No. 21340
Focal Length 150-450mm (equiv. 230-690mm)
Notes HD coating Super Protect (SP) coating All Weather Construction Quick-shift Focus System
Angle of View 16.5°-5.5° (w/PENTAX DSLR)
Lens Construction(group/elements) 18 elements in 14 groups
Min. Aperture (f) F22-27
Min. Focusing Distance 2.0m
Max. Magnification 0.22X
Filter Size 86mm
Diameter & Length (mm) 95.0mm x 241.5mm (3.74 x 9.51 inches)
Weight (g) 2000g w/o hood (4lbs 6oz) 2325g w/hood (5lbs 2 oz)
Diaphragm control Fully Automatic
Number of aperture blades 9 (rounded 150mm f/4.5-8, 450mm f/5.6-8)