Derry Caulfield on Instagram: "ISO international organisation for standardisation, bit boring really The ISO adjusts your shutter speed By default and if you haven’t changed it, your camera is set to AUTO ISO and that means your camera can choose any of the ISO numbers on the range of ISO your camera has which can range from 50 or 100 all they way up to tens of thousands ISO numbers I want you to take your ISO off AUTO ISO and put your ISO on 400 or 500 - it doesn’t matter which And if you find