Understanding ISO Underwater
What ISO stands isn't going to give you much of a clue as to what it does. ISO simply stands for International Standardisation Organisation, nothing much to pick from that. Back in the 70's two film standards (ASA & DIN) combined to make a standard measure for film sensitivity. Modern digital manufacturers have kept to the same measurements to maintain similar brightness levels as film. Essentially ISO tells your camera how bright the photo s [...]
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