Pentax 40mm f/2.8 Limited HD DA

 
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Lens Specifications
Name Pentax 40mm f/2.8 Limited HD DA
Image Circle APS-C
Type Standard Prime
Focal Length 40mm
APS Equivalent 61mm
Max Aperture f/2.8
Min Aperture f/22
Diaphragm Blades 9 (rounded)
Lens Construction 5 elements in 4 groups
Diagonal Angle of View(Based on image circle) 39 degrees
Focus Details "Quick Shift" AF/MF mechanism
Front Element Rotation ?
Zoom System n/a
Closest Focus 40cm / 15.8 in.
Magnification Ratio 0.13x / 1:7.7
Filter Size 49mm (or 30.5mm mounted in hood)
Dimensions(Length x Diameter) 15mm x 63mm / 0.6 in. x 2.5 in.
Weight 89g / 3.1 oz (without hood)
Notes 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$550