EF 20mm f/2.8 USM

Features Lens construction: 11 elements in 9 grps Diagonal angle of view: 94° Focus adjustment: Rear focusing system with USM Closest focusing distance: 0.25m / 0.8ft Ultra-wide-angle lens for serious applications. Easy to hold and carry at 405 grams. Floating rear focusing system. Sharp images are obtained at all subject distances Ultra-wide-angle lens for serious applications. Easy to hold and carry at 405g. Floating rear focusing system. Sharp images are obtained at all subject distances.