Sigma 70-200mm F2.8 EX DG OS HSM is an Auto Focus (AF) Telephoto Zoom
lens with 35mm FF max sensor coverage and it is designed to be used with Pentax KAF3 mount cameras.
Lenses in Pentax KAF3 Mount with Same Focal and Aperture Range
Sigma 70-200mm F2.8 EX DG OS HSM is compatible with cameras that have Pentax KAF3
lens mount. Some of the latest released cameras with Pentax KAF3 lens mount are Pentax K-3 III
, Pentax K-1 II
and Pentax KP
Max sensor coverage of Sigma 70-200mm F2.8 EX DG OS HSM is 35mm FF
Sigma 70-200mm F2.8 EX DG OS HSM has a focal range of 70-200mm and 2.9X zoom ratio. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 105 - 300mm.
Optical Image Stabilization
Sigma 70-200mm F2.8 EX DG OS HSM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.
Sigma 70-200mm F2.8 EX DG OS HSM is available in Black color.
Sigma 70-200mm F2.8 EX DG OS HSM features Rotary (internal)
zoom method where the length of the lens doesn't change while you are zooming in or out. Even though this design has a size disadvantage in general compare to extending designs, it has the benefits of better sealing against dust and moisture, no zoom creep and no weight balance shift while zooming.
Maximum Magnification Ratio
Sigma 70-200mm F2.8 EX DG OS HSM has a Max Magnification Ratio of 0.13x
and has a minimum focusing distance of 1.4m
Sigma 70-200mm F2.8 EX DG OS HSM is a fixed aperture lens with a constant max aperture of f2.8 from 70mm all the way to the 200mm .
Sigma 70-200mm F2.8 EX DG OS HSM's optical formula consists of 22 elements in 17 groups.
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