Pentax 21mm f/3.2 Limited SMC P-DA

Lens Reviews / Pentax Lenses i Lab tested
Lens Specifications
Name Pentax SMC P-DA 21mm f/3.2 AL Limited
Image Circle APS-C
Type Wide Prime
Focal Length 21mm
APS Equivalent 31.5mm
Max Aperture f/3.2
Min Aperture f/22
Diaphragm Blades 7
Lens Construction 8 elements in 5 groups, including 1 hybrid aspherical element
Diagonal Angle of View(Based on image circle) 68 degrees
Focus Details "Quick Shift" AF/MF mechanism
Front Element Rotation No
Zoom System n/a
Closest Focus 20cm / 7.9 in.
Magnification Ratio 0.17x / 1:5.9
Filter Size 43mm or 49mm
Dimensions(Length x Diameter) 25mm x 63mm / 1.0 in. x 2.5 in.
Weight 140g / 4.9 oz.
Notes Dual filter attachment design: 43mm filters on the hood, and 49mm filters on the lens (without use of the hood).
Typical Online Price US$549.95