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 Nikon F (DX) mount lenses.
Sigma 50-100mm F1.8 A is compatible with cameras that have Nikon F (DX) lens mount.
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 .