JIS B 7094:1997现行
Photographic lenses - Measurement for the focal length
出版：Japanese Standards Association
专家解读视频
基本信息
标准编号： JIS B 7094:1997
标准类别：Standard
出版单位：Japanese Standards Association
标准页数：10
标准简介
This Japanese Industrial Standard specifies the measurement method of the focal length of photographic. However, this Standard does not apply to the lenses, the media in the object space and/or image space of which are the lenses other than air and anamorphic lenses.
等同采用的国际标准
ISO 517:1996 - Equivalent
