Pentax 100mm f/2.8 Macro SMC D FA WR

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Lens Specifications
Name Pentax 100mm f/2.8 Macro SMC D FA WR
Image Circle 35mm
Type Telephoto Prime (Macro)
Focal Length 100mm
APS Equivalent 150mm
Max Aperture f/2.8
Min Aperture f/32
Diaphragm Blades 8 (rounded)
Lens Construction 9 elements in 8 groups
Diagonal Angle of View(Based on image circle) 24.5 degrees
Focus Details Quick-Shift Focus System
Front Element Rotation Yes (?)
Zoom System n/a
Closest Focus 30.3cm / 0.99 ft.
Magnification Ratio 1.0x / 1:1
Filter Size 49mm
Dimensions(Length x Diameter) 80.5mm x 65mm / 3.2 in. x 2.6 in.
Weight 340g / 12 oz.
Notes Simplified Weather-resistant Construction; Included Accessories: Hood, Case and Lens Cap
Typical Online Price US$850 (Avail. January 2010)