佳能 EF 17-40mm 鏡頭是一系列由佳能公司生產的變焦鏡頭，一共有下列幾種型號，為佳能L鏡頭。 EF 17-40mm f/4L USM 當17-40mm鏡頭用於佳能數碼EOS系列的APS-C幅面機身（如佳能 EOS 550D）時，17-40mm的視角會變窄，其等效於全幅機身上的27.2-64mm視角（乘以系數1.6）。 Gyártó: Canon Modell: EF 17-40mm f/4L USM Műszaki adatok Gyújtótávolság: 17-40 mm Kompatibilitás: Canon Felépítés: 12 lencsetag/9 csoport Filter méret: 77 mm Apertura tartomány: 4 - 22 Minimum fókusz távolság: 0.28 m Nagyítás: 0.24 Látószög: Horizontális: 93°-49°20' Vertikális: 70°30'-34° Diagonális: 104-57°30' If you're an APS-C Canon shooter, you may want to consider the EF 28mm f/1.8 ($509.00 at Amazon) or EF 40mm f/2.8 STM ($179.00 at Dell) lens as a fast, standard-angle prime—the 50mm focal length Supports auto-focusing: Canon EF 50mm f/1.8 STM, Canon EF 17-40mm f/4 L, Canon EF 24-105mm f/4 L, Tamron 28-75mm f/2.8 Di. Works but doesn't support auto-focusing: Canon EF 50mm f/1.8 Mk1, Canon EF 85mm f/1.8 USM, Canon EF 100mm f/2.8 USM Macro. A gallery of sample images taken with the Sony A7R II compact system camera with the Canon EF 70 This item: 77mm Universal Snap-On Lens Cap for Canon EF 17-40mm f/4L USM Ultra Wide Angle Zoom Lens + Cap Keeper + Microfiber Cleaning Cloth + LCD Screen Protectors $8.99 $ 8 . 99 Get it Nov 15 - 16 Compare Canon EF 17-40mm f 4L USM Lens vs Canon RF 15-30mm f 4.5-6.3 IS STM Lens vs Canon RF 14-35mm f 4 L IS USM Tips & Reviews. About Us. The Professional's Canon EF 24mm f/1.4L II USM Lens. Portrait, landscape, low light. Professional L-series. USM Auto Focus. £ 1,579.99. Eligible for free delivery. Add to basket. Add to wishlist. Buy Metabones T Speed Booster XL 0.64x Adapter for Canon EF Lens to BMPCC 4K Camera featuring Canon EF Lens to BMPCC 4K Camera Body, Supports In-Camera Aperture Control, 0.64x Micro 4/3 Crop Factor Compensation, Powered by Camera Body, 1.33-Stop Increase in Lens Apertures, 7 Optical Elements in 4 Groups, Locking Mechanism to Secure Lens, Rubber Gasket Prevents Dust and Moisture, Brass Mounting JCtbhE.