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电影摄影镜头——又称电影摄影物镜。电影摄影中形成光学影像的透镜。电影摄影镜头可以在摄影机片门内胶片处将被摄景物结成清晰影像,胶片曝光即把该影像以潜影形式记录下来。摄影镜头的重要技术性能指标主要为焦距f、相对孔径D/f和视场角2W。摄影镜头由光学系统和机械装置两部分组成。光学系统包括若干单片透镜和胶合透镜组等元件。机械装置主要包括固定光学元件的紧固件、镜头调节机
Film photography lens - also known as the movie photography lens. A lens that forms an optical image in movie photography. Film camera in the camera film door film will be shot into a clear image, the film exposure to the image that is recorded as a latent image. The main technical performance of photographic lens is the focal length f, relative aperture D / f and viewing angle 2W. Photographic lens by the optical system and mechanical devices in two parts. The optical system includes a number of monolithic lenses and cemented lenses and other components. Mechanical devices mainly include fixed optical components fasteners, lens adjuster