Pentax SMCP-DA 300mm f/4 ED (IF) SDM Autofocus Len

The Pentax SMCP-DA 300mm f/4 ED (IF) SDM Lens is a high-quality telephoto lens that is designed for exclusive use with Pentax digital SLR cameras It offers a focal length that is equivalent (in 35mm format) to 450mm This wide coverage is ideal for a variety of telephoto applications - including portraiture - sports and scenery Pentax DA (DA-Star) zoom lenses come equipped with the SDM System - which assures smoother - quieter auto-focusing operation by using a built-in supersonic motor When mounted on the K10D digital SLR camera body - the focus mode is automatically switched to SDM-assisted auto-focusing When mounted on older Pentax digital SLR camera bodies - the conventional autofocus mode using a camera-mounted motor is selected Like all Pentax lenses - this lens is treated with smc coating for maximum light transmission - sharp definition - and high contrast images In addition - SP (Super Protective) coating made of a special fluoride compound has been applied to the front surface of the lens through the use of a unique evaporation process As a result - the lens offers excellent water- and oil-repellent performance and makes for easier cleaning should the lens be accidentally smeared with fingerprints or cosmetics

Features: Weather & Dust Resistant

Focal Length: 300mm (35mm Equivalent: 450mm)

Maximum Aperture: f/4

Minimum Aperture: f/32

Lens Mount: Pentax K

Lens Format Coverage: APS-C

Angle of View: 5.4°

Minimum Focus Distance: 4.59' / 1.4 m

Maximum Magnification: 0.24x

Optical Design: 8 Elements in 6 Groups

Diaphragm Blades: 9

Focus Type: Autofocus

Image Stabilization: No

Tripod Collar: Yes

Filter Size: 77 mm (Front)

Dimensions (ø x L): 3.3 x 7.2-inch / 8.38 x 18.29 cm

Weight: 2.35 lb / 1.07 kg