25/07/2023
What is ISO?
ISO stands for the International Standards Organization and it is the standardized industry scale for measuring sensitivity to light. So you say “WHAT DOES THAT MEAN???” In plain English, ISO is the amount of noise, or graininess, that you will allow in your photo in a trade-off for proper exposure.
Lower ISO should be used in brighter conditions and higher ISO should be used in low light conditions. Here is a scale to give you a good idea of what settings to use.