Sigma’s proprietary OS (Optical Stabilizer) system offers the use of shutter
speeds approximately 4 stops slower than would otherwise be possible, enabling
hand held tele-photography. Six SLD glass elements compensate for chromatic
aberrations and provide high image quality throughout the zoom range.
Multi-Layer Coating reduces flare and ghosting and ensures sharp and high
contrast images even at the maximum apertures. The lens design adopts an inner
focusing and inner zooming system to provide convenient handling and the HSM
(Hyper Sonic Motor) ensures quiet and high speed autofocus while allowing
full-time manual focus override.
This lens has a minimum focusing distance of
80cm (31.5”) and a maximum magnification ratio of 1:6.3. The rounded 9 blade
diaphragm creates an attractive blur to the out of focus areas of the image. The
addition of Sigma’s TELE CONVERTER 1.4x EX DG APO or 2x EX DG APO produces a
70-210 F4 AF telephoto zoom lens or 100-300 F5.6 AF telephoto zoom respectively.
||21 Elements in 15 Groups
|Angle of view
||27.9 - 9.5 degrees
|F stop range
|Closest Focusing Distance
||80cm / 31.5in.