Canon EF 40mm f/2.8 STM Ultra-Slim Pancake Lens for Canon Digital SLR Cameras, includes; 9pc CD Supply Accessory Kit Bright f/2.8 aperture is effective in low light situations and provides shallow depth of field focus control. 30x optical zoom lens, 24-720 mm equivalent, optical image stabilisation Optimized coatings that minimize ghosting and flare while providing exceptional color balance A circular 7-blade aperture for beautiful soft-focus backgrounds Mounted on a camera with an APS-C sensor, this lens offers a view similar to a 64mm lens in the 35mm format.