Huh? What’s that? Never heard of it? That’s okay. First, let me say right here, that this is not an easy topic to explain but at the same time, it is important. Some cameras today are ISO Invariant or close to ISO Invariant. So what does that mean? Note: 1) In trying to over-simplify things, some of the explanations may not be 100% technically correct. 2) Pictures must … [Read more...]