Pentax DA 16-45mm lens

Last updated
Pentax smc DA 16-45mm F4 ED AL
Pentax K10D.jpg
Mounted on a Pentax K10D
MakerPentax
Lens mount(s) Pentax KAF
Technical data
Type Zoom
Focus drive Screwdrive
Focal length16-45mm
Focal length (35mm equiv.)24-68mm
Aperture (max/min)f/4.0 / f/22
Close focus distance0.28 metres (0.92 ft)
Max. magnification0.25
Diaphragm blades6
Construction13 elements in 10 groups
Features
Manual focus override Yes check.svg Yes
Weather-sealing X mark.svg No
Lens-based stabilization X mark.svg No
Aperture ringX mark.svg No
Physical
Diameter72 millimetres (2.8 in)
Weight356 grams (0.785 lb)
Filter diameter67mm
Accessories
Lens hoodPH-RBL Petal type
History
Introduction2003

The Pentax smc DA 16-45mm F4 ED AL is a standard zoom lens for Pentax K-mount, announced by Pentax on December 9, 2003. It has a constant maximum aperture of f/4.

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Pentax (lens)

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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