Includes lens hood. Canon EF 16-35mm F2.8L III USM. Sigma 18-35mm F1.8 DC HSM A. It comes with a lens hood so that you don’t have to buy it separately. These are used to block strong light sources, such as the sun, from the lens to prevent glare and lens flare. Lens hood is reversible. Canon EF 16-35mm F2.8L III USM. EF17-35mm f/2.8L USM. A large aperture, super wide angle zoom lens with the wide-angle focal length of 17mm. The optical system has two aspherical elements, including the first lens element which is a ground and polished aspherical glass lens element, thoroughly eliminating the distortion that is normally a problem with wide angle zoom lens. Since this 17-40mm L and the 16-35mm L do the same thing on full-frame cameras that the 10-22mm EF-S does on 1.6x cameras, I'll be making constant comparisons among them throughout this review. SPECIFICATIONS top. Introduction Specs Performance Compared Recommendations . Name. Canon calls this the Canon Zoom Lens EF 17-40mm f/4 L USM. This means: canon ef 16-35mm 2.8 l usm (mk i) canon ef 17-35mm 2.8 l usm canon ef 17-40mm f4 l usm canon ef 24-70 mm f4 l is usm (mk i) 用较大的光圈，感光器能够捕捉更多的光线，有助於避免模糊而启用更快的快门速度。. 它还提供领域深浅，让您背景模糊，聚焦关注於景像。. 有园形光圈叶片. Canon EF 16-35mm f/2.8L II USM. 类似於光圈叶片的数量，园形刀片影响光线通至感光器上的方式。. 园形刀片 Canon EF 16-35mm f/2.8L ll USM Zoom Lens for Canon EF Cameras (Renewed) $889.98 & FREE Shipping. Details. (18) Works and looks like new and backed by the Amazon Renewed Guarantee. USM No Yes L-series Yes No Diffractive Optics No Technical data Maximum aperture: f /2.8 f /3.5–4.5 Minimum aperture: f /32 f /22–27 Filter diameter 72 mm 77 mm Horizontal viewing angle: Vertical viewing angle: Diagonal viewing angle: Physical data Weight 570 g 340 g Max. Diameter x Length 89 mm x 79.2 mm 83.5 mm x 68.9 mm Groups/elements 12/15 Launched back in spring 2007 the EF 16-35mm f/2.8 USM L II is the latest ultra-wide zoom lens made by Canon. Regarding its rather steep pricing of around 1400€/US$ it's primarily targeting the professional market segment. Compared to its predecessor Canon claims to have "improved the peripheral image quality at the wide-angle end". Product Dimensions L x W x H ‎12.7 x 8.9 x 8.9 centimetres : Item Weight ‎790 Grams : Brand ‎Canon : Camera Lens ‎35 millimetres : Colour ‎Black : Included components ‎EF 16-35mm f/2.8 L III USM,LENS CAP E-82II,LENS DUST CAP E,LENS CASE LP1222,LENS HOOD EW-88D,Instruction manual,Warranty card : Lens Fixed Focal Length ‎35 Millimetres Gc0EEH.