Sigma 200-500mm F2.8 EX DG is an Auto Focus (AF) Telephoto Zoom lens with 35mm FF max sensor coverage and it is designed to be used with Canon EF mount lenses.
Lens Mount
Sigma 200-500mm F2.8 EX DG is compatible with cameras that have Canon EF lens mount.
Sensor Coverage
Max sensor coverage of Sigma 200-500mm F2.8 EX DG is 35mm FF.
Focal Range
Sigma 200-500mm F2.8 EX DG has a focal range of 200-500mm and 2.5X zoom ratio.
Power Zoom
Sigma 200-500mm F2.8 EX DG has a Power Zoom feature which consists of a rocker switch and a internal zoom motor where you can change the focal length of the lens by pushing this switch. This method of zoom is smoother and generates less shake than zooming in and out using your hand, especially beneficial while recording video.
Aperture