Compatible with most Canon DSLR cameras Works with cameras with Canon EF mounts. 50mm focal length A versatile focal length for capturing crystal-clear shots throughout a variety of shooting situations. 80mm effective focal length when used with an APS-C camera. f/1.8 maximum aperture For optimal light gathering capacity, resulting in clear, highly-detailed images. Smooth, quiet autofocusing A gear-type STM (stepping motor) supports the Movie Servo AF function. Create beautiful, soft backgrounds Features a circular aperture with 7 blades. 14" minimum focus distance Accommodates 49mm filters
