JIS B 7094:1997現行
Photographic lenses - Measurement for the focal length
出版：Japanese Standards Association
專家解讀視頻
基本信息
標準編號： JIS B 7094:1997
標準類別：Standard
出版單位：Japanese Standards Association
標準頁數：10
標準簡介
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.
等同采用的國際標準
ISO 517:1996 - Equivalent
