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.
Specifications
- Lens Mount: PENTAX KAF2
- Focal Length: 300mm (equiv 460mm)
- Aperture: f/4
- Min Aperture: f/32
- Lens construction: 8 elements in 6 groups
- Angle of view: 5.4 degrees (w/ Pentax DSLR)
- Minimum focusing distance: 4.6' (1.4m)
- Filter Diameter: 77mm
- Maximum magnification: 0.24x
- Diaphragm control: Fully Automatic
- Number of aperture blades: 9
- Lens Aperture Ring: n/a
- Tripod Adapter: Included, demountable w/ coin
- Hood: PH-RBK 77mm
- Objective Cap: O-LC77
- Case: S120-210
- Max Diameter x Min Length : 3.3 x 7.2"(83 x 184mm)
- Weight (w/o hood): 37.7 oz (1070g)
- Notes: Supersonic Motor, Quick-shift Focus, SP (Super Protect) Coating, Filter Window, Detachable Tripod Mount
