Home / Standards / GB/T 20224-2006 GB/T 20224-2006 Active Determination of exposure index, ISO speed ratings, standard output sensitivity and recommended exposure index for digital still cameras 数码照相机曝光指数、ISO感光度值、标准输出灵敏度和推荐曝光指数的确定 Standard Type GBT ICS 37.040.10 CCS N46 Status 现行 Issue Date 2006-04-05 Implementation 2006-11-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会