Sigma 150-500mm F5-6.3 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.
Sigma 150-500mm F5-6.3 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 150-500mm F5-6.3 DG OS HSM is 35mm FF.
Sigma 150-500mm F5-6.3 DG OS HSM has a focal range of 150-500mm and 3.3X zoom ratio. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 225 - 750mm.
Optical Image Stabilization
Sigma 150-500mm F5-6.3 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 150-500mm F5-6.3 DG OS HSM features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Sigma 150-500mm F5-6.3 DG OS HSM is a variable aperture lens with a max aperture of f5 and a minimum aperture of f22 at 150mm, and a max aperture of f6.3 and minimum aperture of f28 at 500mm .
Sigma 150-500mm F5-6.3 DG OS HSM's optical formula consists of 21 elements in 15 groups.