Pentax DA* 200mm lens

Last updated
Pentax smc DA* 200mm F2.8 ED (IF) SDM
Maker Pentax
Lens mount(s) Pentax KAF
Technical data
Type Prime
Focus drive Ultrasonic
Focal length 200mm
Aperture (max/min)f/2.8
Close focus distance 1.20 metres (3.9 ft)
Max. magnification 0.2
Diaphragm blades 9
Construction 9 elements in 8 groups
Features
Manual focus override Yes check.svg Yes
Weather-sealing Yes check.svg Yes
Lens-based stabilization X mark.svg No
Aperture ringX mark.svg No
Physical
Max. length 134 millimetres (5.3 in)
Diameter 83 millimetres (3.3 in)
Weight 825 grams (1.819 lb)
Filter diameter 77mm
Accessories
Lens hood PH-RBK77
History
Introduction 2008

The Pentax smc DA* 200mm F2.8 ED (IF) SDM is an interchangeable tele lens for Pentax K-mount, announced by Ricoh on January 23, 2008.

Pentax K-mount lens mount

The Pentax K-mount, sometimes referred to as the "PK-mount", is a bayonet lens mount standard for mounting interchangeable photographic lenses to 35 mm single-lens reflex (SLR) cameras. It was created by Pentax in 1975, and has since been used by all Pentax 35 mm and digital SLRs and also the MILC Pentax K-01. A number of other manufacturers have also produced many K-mount lenses and K-mount cameras.

Ricoh Japanese multinational imaging and electronics company

The Ricoh Company, Ltd. is a Japanese multinational imaging and electronics company. It was founded by the RIKEN zaibatsu on 6 February 1936 as Riken Sensitized Paper. Ricoh's headquarters are located in Ricoh Building in Chūō, Tokyo.

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Pentax (lens) photographic lenses sold under the Pentax brand

Pentax lenses were first badged as Takumar. The Takumar branded lenses were well respected for their line of Super Takumar, which designated the high performance coating applied to the lens as well as the optical formulas used to make them. The majority of the industry at the time was still satisfied with the variations of the "plumb" coating process and later some of the two and three layer processes as well. Asahi Pentax soon introduced the Takumar Super-Multi-Coated line of lenses which was a 7 layer process as the industry had just caught up with similar forms of 5 layer multi-coated optics. Eventually Asahi Optical and Pentax slowly shifted much of their lens production under the Pentax name and transitioned some of the successful designs that were first introduced under the Takumar name to use Asahi/Pentax badging as well as beginning to use the "smc" abbreviation. Eventually the Asahi partnership disappeared and the Pentax name became solely used. Pentax lenses saw many feature changes to answer the market, such as: incorporating "Auto-Aperture" with the M42, the light weight and compactness with the 'M' series, Aperture Priority overrides with the 'A' series, and Auto-Focus with the 'F' series. Modern Pentax lenses for digital SLR cameras have seen the elimination of the aperture ring completely as found on Pentax DA and D-FA series lenses. They use the Pentax KAF mount. All of these lenses have an autofocus feature, either operated from the camera body or from an internal SDM motor. Pentax compatible lenses are also made by third-party companies.

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