Sigma 50-100mm F1.8 A is an Auto Focus (AF) Telephoto Zoom
lens with APS-C / DX max sensor coverage and it is designed to be used with Sigma SA mount cameras.
Sigma 50-100mm F1.8 A is compatible with cameras that have Sigma SA lens mount.Some of the latest released cameras with Sigma SA lens mount are Sigma SD1 Merrill
, Sigma SD1
Max sensor coverage of Sigma 50-100mm F1.8 A is APS-C / DX.
Sigma 50-100mm F1.8 A has a focal range of 50-100mm and 2.0X zoom ratio. When mounted on a APS-C / DX format camera, it provides an 35mm (FF) equivalent of 75 - 150mm.
Sigma 50-100mm F1.8 A has a constant max aperture of f1.8 from 50mm all the way to the 100mm .