Canon 17-40mm f/4.0 L USM review By: Jon Tarrant, What Digital Camera (Oct 7, 2008) Overall, Canon’s EF 17-40mm f/4 L USM is designed to match the needs of demanding professionals and, as such, does so with ease. Canon EF 17-40mm f/4L USM ⭐ review. Discover the key facts and see how Canon EF 17-40mm f/4L USM performs in the camera lens ranking. Which Canon-branded EF lenses have front elements EF 17-40mm f/4L USM (EW-83E petal hood) Some reviews mention it. Canon EF 17-40mm f/4L USM. Canon EF-S 17-55 F/2.8 IS USM. Lenses with built-in focus motor focus faster and more quietly than lenses without a focus motor which rely on the camera's body focus motor. This is the closest distance that the lens can focus. At f/4 the 17-40mm is sharper, has less flare and higher contrast. The new 17-40mm f/4L is a welcome surprise though. At nearly half the price of the faster and slightly wider 16-35mm f/2.8L it provides excellent image quality, surpassing that of the more expensive lens in several areas. READ FULL REVIEW. Ken Rockwell. I love my Canon 17-40mm f Of course the 16-35mm f/2.8 and 17-40mm f/4 work great on the 1.6x sensor cameras, but for those cameras the 18-55mm EF-S lens, for one fifteenth the price, is lighter and more agile. None of these is wide on a 1.6x camera. Even this 16-35mm on a 1.6x camera only covers a range similar to what a 26-57mm lens would on a 35mm film camera. Review by Klaus Schroiff, published April 2009 Special thanks to Philipp Schürmann for providing this lens! Introduction The Canon EF 17-40mm f/4 USM L is one of the most popular L class lenses thanks to its relatively affordable price and its dual purpose scope - it can serve as a standard zoom lens on APS-C DSLRs and it's an ultra-wide zoom lens with an attractive range on full format DSLRs. I just bought a new 17-40mm f/4 L. I thought Canon's L lenses are dust and drip-proof. However, to my disappointment the instruction manual says (in page ENG-1): "Since the front element of this lens moves when focusing (zooming), you need to attach a Canon PROTECT filter sold separately for adequate dust- and water-resistant performance. Vay Tiền Trả Góp Theo Tháng Chỉ Cần Cmnd.

canon ef 17 40mm f 4l review