Pentax D-FA 100 2.8 Macro Auto Focus Lens

The PENTAX smc P-D FA 100mm F2.8 macro is designed specifically for digital cameras. It utilizes curvature and positioning of optical elements to virtually eliminate flare and ghosting for clear, high-quality images particularly important to digital photography. This versatile lens can also be used a telephoto lens and features our acclaimed multi-layer coating to lower surface reflection, reduce ultraviolet rays, and deliver clear, high-contrast images.
Features
Metal Lens mount for extra durability
Large lens hood to shield the lens surface from excessive incident light
Responsive "Quick-Shift Focus System" Allows instant shift from AF to MF
Maximum magnification of 1x (Life Size)
Designed to be extremely compact and lightweight
Aperture Ring for fingertip aperture control
Image Circle compatible with 35mm format SLR Cameras
Optimized for Digital Photography, Including lens coating, curvature and positioning of optical elements

Specifications
Construction 8 Groups/ 9 Elements
Angle of view 24.5° (16° with ist D Body)
F stop range f/2.8-32
Closest Focusing Distance 0.303m (11.9")
Maximum Magnification 1:1
Filter Size 49mm
Dimensions (Length x Diameter) 3.2 " x 2.7"
Weight 345g (12.2 oz.)