ISO 2720-1974 摄影 一般用途的照相曝光计(光电式) 产品规范指南

标准号：ISO 2720-1974
中文标准名称：摄影 一般用途的照相曝光计(光电式) 产品规范指南
英文标准名称：Photography; General purpose photographic exposure meters (photoelectric type); Guide to product specification
标准类型：N46
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：N46
国际标准分类号：37.040.10
适用范围：Specified are calibration levels and test conditions for general-purpose photoelectric exposure meters which measure reflected or incident light, or both, in determining photographic exposure for camera use. The specifications apply to exposure meters containing a light-sensitive element, and indicating electrical instrument, a directional system and a calculator to correlate the meter indications with the camera exposure settings.