BS ISO 12232:2019 Photography — Digital still cameras — Determination ofexposure index, ISO speed ratings, standard output sensitivity, and recommended exposure index
2020BS ISO 12232:2019+A1:2020 Photography. Digital still cameras. Determination of exposure index, ISO speed ratings, standard output sensitivity, and recommended exposure index
1970BS ISO 12232:2019 Photography — Digital still cameras — Determination ofexposure index, ISO speed ratings, standard output sensitivity, and recommended exposure index
2006BS ISO 12232:2006 Photography - Digital still cameras - Determination of exposure index, ISO speed ratings, standard output sensitivity, and recommended exposure index