Sigma 18-250mm F3.5-6.3 DC OS HSM is an Auto Focus (AF) SuperZoom
lens with APS-C / DX max sensor coverage and it is designed to be used with Sigma SA mount cameras.
Lenses in Sigma SA Mount with Same Focal and Aperture Range
Sigma 18-250mm F3.5-6.3 DC OS HSM is compatible with cameras that have Sigma SA
lens mount. Some of the latest released cameras that are compatible with the Sigma SA lenses are Sigma SD1 Merrill
, Sigma SD1
Sigma 18-250mm F3.5-6.3 DC OS HSM is also available for Canon EF , Nikon F (DX), Pentax KAF3, Sony Alpha, Sigma SA, Canon EF, Nikon F (DX), Pentax KAF3 and Sony Alpha mounts.
Max sensor coverage of Sigma 18-250mm F3.5-6.3 DC OS HSM is APS-C / DX
Sigma 18-250mm F3.5-6.3 DC OS HSM has a focal range of 18-250mm and 13.9X zoom ratio.
Optical Image Stabilization
Sigma 18-250mm F3.5-6.3 DC OS HSM features an optical image stabilization system which helps to reduce the blur that occurs due to shaking during hand-held shooting.
Sigma 18-250mm F3.5-6.3 DC OS HSM is available in Black color.
Sigma 18-250mm F3.5-6.3 DC 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 18-250mm F3.5-6.3 DC OS HSM has a Zoom lock
feature which eliminates Zoom creep where focal length of the lens changes with gravity when it's held downwards or upwards.
Maximum Magnification Ratio
Sigma 18-250mm F3.5-6.3 DC OS HSM has a Max Magnification Ratio of 0.29x
and has a minimum focusing distance of 0.45m
Sigma 18-250mm F3.5-6.3 DC OS HSM is a variable aperture lens with a max aperture of f3.5 and a minimum aperture of f22 at 18mm, and a max aperture of f6.3 and minimum aperture of f40 at 250mm .
Sigma 18-250mm F3.5-6.3 DC OS HSM's optical formula consists of 18 elements in 14 groups.
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