BS ISO 2721:2013现行
Photography - Film-Based Cameras - Automatic Controls Of Exposure
出版：British Standards Institution
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基本信息
标准编号： BS ISO 2721:2013
发布时间：2013/3/31 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：22
标准简介
Describes the exposure at the focal plane of film-based cameras for values of two exposure parameters, i.e. field luminance and film speed, and also describes methods of evaluating other photometric characteristics, such as the acceptance angles of the photoelectric system.
