For those of us who mostly approach photography from a point-and-shoot angle, most of the more intricate functions like ISO and shutter speeds tend to get ignored. Especially when using the default iPhone Camera app, which doesn’t include any ISO controls. When getting into more complex photography, though, it’s a basic setting you really need to know. But what even is ‘ISO’ exactly? The numbers used to determine ISO values — 50, 100, 200, 400, 800, 1600, 3200, 6400,
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