Focal Length & Maximum Aperture: 17mm 1:4Minimum Aperture: f/22Lens Construction: 18 elements in 12 groupsDiagonal Angle of View: 104 degree (without tilt or shift)Image circle diameter: 67.2mmFocus Adjustment: Manual focus, rear focusing system with focusing cam (with floating system) Closest Focusing Distance: 0.82 ft./0.25m (maximum close-up magnification: 0.14x)Aperture Control: EMD with 8 blade iris diaphragm, circular aperture Lens Cap, Lens Hood & Pouch��ProvidedMax. Diameter x Length: 3.5 x 4.2 in./88.9 x 106.7mm (maximum lens length) Weight��28.9 oz./820g Package Content1 Canon TS-E 17mm f/4L Tilt-Shift Lens1 Lens Cap1 Lens Hood1 Lens Pouch