摄影用中性玻璃滤光镜

2022-04-08

摄影用玻璃滤光镜通用规则
General specification for photographic glass filters

2016-10-22

摄影用滤光镜滤光系数的测量方法
Measuring method of photographic filter factor

2014-05-12

Commission Delegated Directive (EU) 2017/1009 of 13 March 2017 amending, for the purposes of adapting to technical progress, Annex III to Directive 2011/65/EU of the European Parliament and of the Council as regards an exemption for cadmium and lead in filter glasses and glasses used for reflectance standards (Text with EEA relevance. )
2017年3月13日委员会授权指令（EU）2017/1009 为适应技术进步 修订了欧洲议会和理事会指令2011/65/EU附件三 关于滤光镜和反射标准用玻璃中镉和铅的豁免（与EEA相关的文本）

2017-03-13