Description
The Sigma 50-100mm f/1.8 DC HSM Art (Canon EF, APS-C) is a fast telephoto zoom giving an 80-160mm equivalent range, with a constant f/1.8 aperture across the whole zoom.
Optics
Three F Low Dispersion elements and one Special Low Dispersion element control chromatic aberration and colour fringing, with a Super Multi-Layer coating limiting flare and ghosting under strong lighting.
Handling
A Hyper Sonic Motor gives fast, quiet autofocus with full-time manual override, and a 9-blade diaphragm — built from fluorine-coated polycarbonate with a carbon feather film — gives smooth, controlled performance at high shooting speeds. Inner zoom and focus keep the lens length constant, and Thermally Stable Composite construction holds precision across a wide temperature range.
