Sigma 18-300 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 Pentax KAF3 mount cameras.
Lens Mount
Sigma 18-300 F3.5-6.3 DC 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 KP and
Pentax K-70.
Sensor Coverage
Max sensor coverage of Sigma 18-300 F3.5-6.3 DC OS HSM is
APS-C / DX.
Focal Range
Sigma 18-300 F3.5-6.3 DC OS HSM has a focal range of 18-300mm and 16.7X zoom ratio.
Optical Image Stabilization
Sigma 18-300 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.
Body Colour
Sigma 18-300 F3.5-6.3 DC OS HSM is available in Black color.
Zoom Method
Sigma 18-300 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.
Zoom Lock
Sigma 18-300 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 18-300 F3.5-6.3 DC OS HSM has a Max Magnification Ratio of
3x and has a minimum focusing distance of
0.39m.
Aperture
Sigma 18-300 F3.5-6.3 DC OS HSM is a variable aperture lens with a max aperture of f3.5 and a minimum aperture of f at 18mm, and a max aperture of f6.3 and minimum aperture of f at 300mm .