
When Canon launched the Canon EOS C400 cinema camera, it introduced the world to triple-base ISO – a feat it repeated just months later by announcing the Canon EOS C80. But what is triple-base ISO and does it really matter?
Well, I'll cut to the chase and tell you that it's pretty darned impressive. But to understand triple-base ISO and why three really is the magic number, you need to understand what ISO does in the first place, what base ISO means, and how it differs from another often-used piece of photography jargon: native ISO.