Pentax 300mm f/4 ED IF SDM SMC DA*

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Lens Specifications
Name Pentax 300mm f/4 ED IF SDM SMC DA*
Image Circle APS-C
Type Telephoto Prime
Focal Length 300mm
APS Equivalent 450mm
Max Aperture f/4
Min Aperture f/32
Diaphragm Blades 9
Lens Construction 8 elements in 6 groups
Diagonal Angle of View(Based on image circle) 5.4 degrees
Focus Details Internal, SDM (Supersonic Motor) with Quick-shift Focus System
Front Element Rotation No
Zoom System n/a
Closest Focus 1.4m / 4.6 ft.
Magnification Ratio 0.24x / 1:4.2
Filter Size 77mm
Dimensions(Length x Diameter) 184mm x 83mm / 7.2 in. x 3.3 in.
Weight 1.07kg / 37.7 oz
Notes Included Accessories: PH-RBK Hood, Detachable Tripod Mount, Case
Typical Online Price US$1,300 (available May 2008)