Sigma AF 50mm F1.4 EX DG HSM Pentax Lens

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Category: Photography-Lenses-SLR-Lenses, sigma


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The Sigma 50mm f/1.4 EX DG HSM Autofocus Lens is a standard lens that provides a large maximum aperture of f/1.4. It is the ideal prime lens for use with all Pentax digital or film SLR cameras. When used on Pentax digital SLR cameras with the smaller APS-C size sensor, the equivalent focal length of this lens will be 75mm, which makes it an excellent choice as a bright medium telephoto lens. Its large f/1.4 aperture allows for sharply defined contrasty images against a nicely blurred background. The lens offers superior peripheral brightness even at the maximum aperture, and corrects for possible flare.

The improved DG lens design corrects for various aberrations. This lens is specially coated to get the best color balance, while cutting down on ghosting caused by reflections from the digital image sensor. The lens provides the utmost correction against lateral chromatic aberration, which is a serious problem for digital SLR cameras.

This lens also incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focus override.

EX lens series denotes excellence of engineering and new technology
Super multi-layer lens coating reduces flare and ghosting
Equipped with the silent, responsive and high speed Hyper Sonic Motor and provides full time manual focus override
Performance
Focal Length 50 mm
Aperture Maximum: f/1.4
Minimum: f/16
Camera Mount Type Pentax K
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Pentax Digital (APS-C)
Angle of View 46.8 degree
Minimum Focus Distance 1.48 inches (45cm)
Magnification 0.13x
Maximum Reproduction Ratio 1:7.4
Groups/Elements 6/8
Diaphragm Blades 9
 

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