Pentax 10-17mm f/3.5-4.5 ED IF SMC P-DA Fish-Eye

 
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Lens Specifications
Name Pentax SMC P-DA Fish-Eye 10-17mm f/3.5-4.5 ED IF
Image Circle APS-C
Type Fisheye Zoom
Focal Length 10 - 17mm
APS Equivalent 15 - 25.5mm
Max Aperture f/3.5 - 4.5
Min Aperture f/22 - 32
Diaphragm Blades 6
Lens Construction 10 elements in 8 groups
Diagonal Angle of View(Based on image circle) 180 fisheye at 10mm
Focus Details "Quick-Shift" Focus System for instant shift to manual focus
Front Element Rotation No
Zoom System Rotary
Closest Focus 0.14m / 0.46 feet
Magnification Ratio 0.39x / 1:2.6
Filter Size n/a
Dimensions(Length x Diameter) 68mm x 71.5mm / 2.7 in. x 2.8 in.
Weight 320g / 11.3 oz
Notes Distance scale, Integrated lens hood; no filter ring or rear-element filter clip
Typical Online Price US$519