Canon EF camera - Wikipedia
The Canon EF is a manual focus 35mm single-lens reflex camera produced by Canon between 1973 and 1978. It was compatible with Canon's FD-mount lenses. The EF was built as an electro-mechanical version of Canon's top-of-the line wholly mechanical Canon F-1.
RF/EF镜头 - 佳能（中国）
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Canon EF lens mount - Wikipedia
The EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras. EF stands for "Electro-Focus": automatic focusing on EF lenses is handled by a dedicated electric motor built into the lens.
佳能EF接環鏡頭 - 维基百科，自由的百科全书
佳能EF接环镜头 指具有电子对焦（Electronic Focusing）功能，即机身自动对焦系统指挥镜头内置的马达带动镜头对焦，并与佳能EF接环相对应的镜头。 此列表內的EF鏡頭適用於所有 佳能EOS系列 相機。 不過，由於、 APS-C 影像感測器尺寸的相機大小為1.6的轉換係數，故如將EF鏡頭用於APS-C片幅的數位單眼反光相機，其可視範圍焦距等效於35mm膠片片幅的焦距為鏡頭實際焦距數乘以1.6之後的數值。 EF接環鏡頭無法直接接在早期的佳能FD接環相機使用，反之亦然，除 …
Canon DSLR Lenses & Camera Lens Sets: EF & TS - Canon U.S.A., …
A stepping motor (Gear-type STM) supports the Movie Servo AF function in providing smooth and quiet continuous AF during video recording, as well as when shooting photos. Improved exterior design includes new focus ring placement making it the most compact Canon 50mm lens.
產品列表 - EF 鏡頭 - 佳能香港
EF 70-200mm f/4L IS II USM. 達5級快門防震效果 1 的光學影像穩定器. 1片螢石鏡片及2片UD超低色散鏡片. 加入專為運動攝影師而設的IS模式3（IS Mode 3）. SRP HKD 12,380.00. 比較.
產品列表 - EF鏡頭 - 佳能 台灣
首支ef變焦鏡頭配備5級快門防震效果的光學影像穩定器; 採用1片螢石鏡片及2片ud超低色散鏡片，帶來更高解像度及對比度的影像; 9片圓型光圈葉營造優雅散景
EF Lenses - Canon Europe
Canon EF lenses encompass a wide range of creative options including compact, wide-aperture prime lenses, zooms for flexible framing and specialist lenses such as fisheye, macro and tilt-shift. FIXED FOCUS. EF Prime. EF fixed focal length lenses offering a blend of image quality, compact size and wide maximum apertures. FLEXIBLE FRAMING.
EF Lenses | Canon Canada Inc.
EF Lenses. Choose from one of the world’s most comprehensive selection of lenses—including telephoto, macro and tilt/shift—to capture amazing stills and stunning video with incredible clarity and brilliant colours.
Canon EF 50mm f/1.8 STM - Canon U.S.A., Inc.
Compact and lightweight-an outstanding walk-around lens-Canon's EF 50mm f/1.8 STM is a great entry into the world of EOS prime lenses. With an 80mm effective focal-length on APS-C cameras, 50mm on full-frame cameras, it's an excellent prime lens for portraits, action, even nighttime photography.