You are exactly right Grim.
It's a standarization. There are a lot of standarizations but for photography it is ISO 5800:1987. In the standard it sais which amount of light is needed to develop a photo. In the early years it was in the doca. You could put a roll with a certain amount of ISO/ASA in your camera. Now a days it's all digital and we speak about digital numbers.
Greets,
jerico
It's a standarization. There are a lot of standarizations but for photography it is ISO 5800:1987. In the standard it sais which amount of light is needed to develop a photo. In the early years it was in the doca. You could put a roll with a certain amount of ISO/ASA in your camera. Now a days it's all digital and we speak about digital numbers.
Greets,
jerico
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