noun
ISO speed; ISO sensitivity
Photography term for the sensitivity of a digital camera's image sensor or film to light. Higher values allow shooting in darker conditions but increase noise.
暗い場所ではＩＳＯ感度を上げて撮影します。
In dark places, I shoot with a higher ISO sensitivity.
このカメラはＩＳＯ感度が最高25600まで設定できます。
This camera can set ISO sensitivity up to 25600.