Pentax 15mm f/4 ED AL Limited HD DA

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Lens Specifications
Name Pentax 15mm f/4 ED AL Limited HD DA
Image Circle APS-C
Type Wide Prime
Focal Length 15mm
APS Equivalent 23mm
Max Aperture f/4
Min Aperture f/22
Diaphragm Blades 7 (rounded)
Lens Construction 8 elements in 6 groups
Diagonal Angle of View(Based on image circle) 86 degrees
Focus Details Internal, with "Quick-Shift" focus system
Front Element Rotation No
Zoom System n/a
Closest Focus 18cm / 7.1 in.
Magnification Ratio 0.15x / 1:6.7
Filter Size 49mm
Dimensions(Length x Diameter) 39.5mm x 63mm / 1.6 in. x 2.5 in.
Weight 189g / 6.7 oz (without hood)
Notes Hood is built-in, pullout type; Available in black or silver; High-grade multi-layer HD (High Definition) coating; Rounder aperture blades should yield more pleasing bokeh.
Typical Online Price US$700