Pentax 300mm f4 smc ED(IF) SDM P-DA Lens

The high performance DA* 300mm ED (IF) lens incorporates an SDM system which creates a smoother, quieter auto focus. Featuring a Quick-shift Focus System, switching from auto focus to manual is instantaneous. Weather and dust resistant, it’s the perfect lens for extreme weather conditions. Developed specifically for PENTAX digital SLRs, the DA* 300mm ED (IF) SDM lens has PENTAX SP coating which protects the exposed lens elements, and a focal length equivalent to 450mm in the 35mm format.Features:

·High performance telephoto lens

·SDM system creates smoother, quieter auto focus

·Weather resistant and dust resistant body

·Quick-shift Focus System for instant switching from auto focus to manual focus

·PENTAX SP coating protects the exposed lens elements

·ED elements compensate for chromatic aberration

·Developed specifically for PENTAX digital SLRs

·Focal length equivalent to 450mm in the 35mm formatSpecifications: Lens Mount:

·PENTAX KAF2Focal Length:

·300mm (equivalent 460mm)Aperture:

·F4Minimum Aperture:

·F32Lens Construction:

·8 elements in 6 groupsAngle of View:

·5.4 degrees (w/PENTAX DSLR)Minimum Focusing Distance:

·4.6' (1.4m)Maximum Magnification:

·0.24XFilter Diameter:

·77mmDiaphragm Control:

·Fully AutomaticNumber of Aperture Blades:

·9Lens Aperture Ring:

·N/ATripod Adapter:

·Included, demountable w/coinHood:

·PH-RBK 77mmObjective Cap:

·O-LC77Case:

·S120-210Maximum Diameter x Minimum Length:

·3.3 x 7.2" (83 x 184mm)Weight (w/o Hood):

·37.7 oz. (1,070g)Notes:

·Supersonic motor, Quick-shift focus, SP (Super Protect) coating, Filter window, Detachable tripod mount