Canon EF 17-40 f/4 L USM lens For any Canon user especially those into landscape photography, this is an excellent lens, very fast throughout the entire focal length. Because I use this lens for landscape photography, I love the weight of the lens.
17 - 40 mm f/4.0. Construcción del lente: 12 elementos en 9 grupos. Ángulo diagonal de visión: 104° - 57° 30' Ajuste de enfoque: Sistema de enfoque interno con USM. Distancia mínima de enfoque: 0.28 m/0.9 pies. Sistema de zoom: Tipo Rotativo. Tamaño del filtro: 77 mm. Máximo diámetro x longitud, peso: 3.3" x 3.8", 1.1 lb/83.5 x 96.8 mm What is the difference between Canon EF 17-40mm f/4L USM and Samyang 14mm F/2.8 ED AS IF UMC? Find out which is better and their overall performance in the camera lens ranking. 佳能EF 17-40mm F4L USM镜头是2004年跟随EOS10D数码单反推出的一款超广角镜头，虽说是红圈L镜头，但是它的价格相对比较便宜，所以这支镜头在佳能单反使用者口中创造了不错的口碑。. 它的做工非常精致，整体造型与第一代的16-35mm镜头差不多，只不过在长度和重量The EF 17-40mm f/4L USM lens is a member of a suite of Canon zoom lenses that retain a constant f4 maximum aperture throughout the zoom range. Designed for use on 35mm SLR cameras, this ultra-wide zoom is ideal for capturing dramatic landscape shots and taking portraits of large groups of people.
在舉世注目、價格破壞的Canon Kiss-Digital發表之前夕，且讓我們來檢視這支平價版的超廣角L鏡──EF 17-40mm f/4L USM。敏銳的影友，應可將Canon近來的佈局連貫起來，那就是：維持品質、價格下放。沒錯！ NEBtOob.