Pentax 12-24mm f/4 ED AL IF SMC P-DA

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Lens Specifications
Name Pentax SMC P-DA 12-24mm f/4 ED AL IF
Image Circle APS-C
Type Wide Zoom
Focal Length 12 - 24mm
APS Equivalent 18 - 36mm
Max Aperture f/4
Min Aperture f/22
Diaphragm Blades 8
Lens Construction 13 elements in 11 groups, including 2 aspherical and 1 ED elements
Diagonal Angle of View(Based on image circle) 99 to 61 degrees
Focus Details Internal with "Quick Shift" AF/MF mechanism
Front Element Rotation No
Zoom System Rotary
Closest Focus 0.30m / 1.0 ft.
Magnification Ratio 0.12x / 1:8.3
Filter Size 77mm
Dimensions(Length x Diameter) 87.5mm x 84mm / 3.4 in. x 3.3 in.
Weight 430g / 15.2 oz
Notes Included Accessories: Lens Hood
Typical Online Price US$899.95