感光度测定 meaning in English

sensitometry

Method for determining the speed of colour reversal camera films
彩色反转照相胶片感光度测定方法
Photographic sensitometry , determination of optical density ; geometric conditions for transmission density
照相胶片感光度测定.光密度测定.透射密度的几何条件
Photography - black - and - white pictorial still camera negative film process systems - determination of iso speed
摄影技术.黑白静物摄影机负片冲洗系统. iso感光度测定