The Sigma 18-35mm f/1.8 DC HSM is designed to deliver the 35mm viewing angle equivalent of a 27-52.5mm zoom.
The 17-elements-in-12-groups optic will include Special Low Dispersion glass and a Super Multi-Layer Coating to help reduce flare and ghosting.
Features also include a minimum focusing distance of 28cm, a brass bayonet mount and 9-blade diaphragm.
A price and launch date have yet to be announced.