BS ISO 12232:2019 Photography. Digital still cameras. Determination of exposure index, ISO speed ratings, standard output sensitivity, and recommended exposure index

Equations
Photographic materials
Colour photography
Film speeds
Still photographic film
Computer storage devices
Signal-to-noise ratio
Digital signals
Ratings
Electronic equipment and components
Monochrome photography
Test equipment
Cameras
Tables (data)
Photography
Testing conditions
Illuminance
Exposure time
Sensitometry
Photographic film

Link: BS ISO 12232:2019 Photography. Digital still cameras. Determination of exposure index, ISO speed ratings, standard output sensitivity, and recommended exposure index
Source: BSI Standards