Pentax 20-35mm f/4 AL SMC P-FA

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Lens Specifications
Name Pentax SMC P-FA 20-35mm f/4 AL
Image Circle 35mm
Type Wide Zoom
Focal Length 20 - 35mm
APS Equivalent 30 - 52.5mm
Max Aperture f/4
Min Aperture f/22
Diaphragm Blades ?
Lens Construction 10 elements in 8 groups, including 2 aspherical elements
Diagonal Angle of View(Based on image circle) 94 to 64 degrees
Focus Details
Front Element Rotation ?
Zoom System Rotary
Closest Focus 30cm / 11.8 in.
Magnification Ratio 0.06x / 1:16.3
Filter Size 58mm
Dimensions(Length x Diameter) 68mm x 69.5mm / 2.7 in. x 2.7 in.
Weight 245g / 8.6 oz
Typical Online Price US$499.95