This system compensates for astigmatic aberration and spherical aberration and provides extremely high optical
performance from infinity to 1:1 Macro. Three SLD (Special Low Dispersion) glass elements provide
excellent correction of all types of aberrations and the Super Multi-Layer Coating reduces flare and
This lens has superior peripheral brightness and provides sharp and high contrast images
even at the maximum apertures. Equipped with Sigma’s own proprietary OS (Optical Stabilizer)
function, this lens offers the use of shutter speeds approximately 4 stops slower than would otherwise
be possible. The HSM (Hyper Sonic Motor) ensures quiet and high speed autofocus as well as full-time
manual focus capability. This lens has a rounded 9 blade diaphragm creating a smooth blur to the out
of focus areas of the image.
It is also possible to use this lens with Sigma’s optional APO Tele
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