Rear and Front cap User manual
Ultra-wide-angle lens for serious applications. Easy to hold and carry at 14.3 oz. (405g). Floating rear focusing system. Sharp images are obtained at all subject distances.
Focal Length Maximum Aperture 20mm 1 2.8 Lens Construction 11 elements in 9 groups Diagonal Angle of View 94 Focus Adjustment Rear focusing system with USM Closest Focusing Distance 0.25m Filter Size 72mm Max. Diameter x Length 77.5 x 70.6mm Weight 405g