Along with shutter speed and aperture, ISO is one of the three fundamental parameters for determining the correct exposure of your images. ISO is a bit different from aperture and shutter speed, however, as you almost never use it for creative purposes like the other two. So, how do you manage it properly? This helpful video tutorial will show you what you need to know to choose the right ISO for every photo.
[ Read More ](Originally posted by Alex Cooke)