Canon Community

Hi, very new to photography, I will say (write) things using what I read on descriptions or using my own nomenclature.Background:I have a Canon 5d Mark II (limited knowledge of the controls), the lens I have is a Canon 24-70mm 1:2.8 L USM.Questions1 ...

I'm old , my camera (5D Mark II) is old, lets start there.I've just starting learning the camera by watching YouTube. A couple of individuals talk about ISO and they use the "native" ISO settings most i.e. 160, 320, 640... However, my ISO is 100, 200...