Canon公司于2001年2月27日在东京宣布，在这天，Canon建立了镜头生产的一个里程碑，EF镜头的累计生产量达2000万支。
用于EOS系列AF SLR的EF镜头生产始于1987年，在公司的Utsunomiya工厂生产。于1995年8月，就生产了1000万支EF镜头，经过5年半的时间，现在达到了2000万支。该成就反映了用户对EF镜头的性能质量和Canon市场运作所提供的服务的高度满意。
Canon所特有的EF(电子对焦)镜头始于1987年，将大口径全电子卡口和内置AF马达结合在一起。同年11月，Canon工业化生产了第一支用于35mm AF SLR的超声波马达(USM)驱动的镜头：EF 300/2.8L USM；1989年9月生产了EF 50/1.0L USM，是世界上用于AF SLR最大口径的镜头；1995年9月，生产了EF 75-300/4-5.6 IS USM，是世界上第一支装备了影象稳定器的镜头，用来消除手振的影响。
2000年9月，Canon宣布研制成功世界上第一支采用多层衍射光学元件的照相机镜头，并将不久生产采用这类光学元件的商业版的紧凑、轻型和高素质的EF 400/4 DO IS USM。
Canon现有的EF镜头种类共有54个型号(包括增距镜)，是业内最为庞大的，焦距段从超广角的14mm直至超长焦的1200mm，其中包括标准和大变倍比的变焦镜头、大光圈镜头、带移轴和倾斜的可调整透视的TS-E镜头。Canon EF镜头得到各种层次用户的广泛好评，从而占据了最大的可交换镜头的市场份额。
而且，每支EF镜头都与EOS D系列数字SLR相兼容。
原文在 http://www·canon·com/imagecom/ef20m.html
Canon produces 20-millionth EF lens
TOKYO, February 27, 2001-Canon Inc. today announced the achievement of a new lens-production milestone with cumulative production of the company's EF lenses passing the 20-million mark.
Production of interchangeable EF lenses for Canon EOS-series AF (autofocus) SLR cameras began in 1987 at the company's Utsunomiya Plant. Canon produced its 10-millionth EF lens in August 1995 and, a mere five and a half years later, has now reached the 20-million plateau. This achievement reflects users' high level of satisfaction with the performance and quality realized by EF lenses, as well as the service offered through Canon's marketing operations.
Canon's proprietary EF (electro-focus) lens, which combines a large-diameter fully electronic lens mount and an internal autofocus motor, was born in 1987. In November of the same year, Canon introduced the industry's first*1 Ultrasonic Motor (USM)-powered lens: the EF 300mm f/2.8L USM. In September 1989 the EF 50mm f/1.0L USM, featuring the world's largest aperture*1 of f/1.0, was launched and in September 1995 the EF 75-300mm f/4-5.6 IS USM, equipped with the world's first*1 Image Stabilizer to correct for the effect of camera shake, made its debut. Canon's EF lens lineup, through the introduction of the latest innovative technologies, has consistently been recognized as the state of the art in the industry.
In September 2000 Canon announced the development of the world's first Multi-Layer Diffractive Optical Element for camera lenses and intends to soon launch a commercial version of the compact, lightweight, high image-quality EF 400mm f/4 DO IS USM lens, which incorporates the element.
Canon's current EF lens lineup comprises 54*2 models, the most comprehensive selection,*3 in the industry. Canon EF lenses span the gamut from ultra-wide 14mm to super-telephoto 1200mm lenses and include standard and super-telephoto zoom models, large-aperture lenses, and TS-E lenses, which are equipped with a special tilt-shift mechanism that permits the manipulation of image perspective and distortion. Canon EF lenses have garnered high praise from a wide user base, from professional and advanced amateur photographers to novice photo enthusiasts, and earned Canon top share of the interchangeable lens market.
Also, as each EF lens is compatible with Canon's EOS D-series of digital SLR cameras, both film and digital camera users can benefit from the exceptional quality, performance and versatility realized by the EF lens lineup.
Canon, through continual innovations in every area of production technology, including optical design and electronics, intends to continue its efforts to deliver attractive products in response to user needs, opening up new directions in the future of photographic expression.
*1 For 35mm AF SLR cameras
*2 Including EF lens extenders
*3 As of February 27, 2001.
|
