Quote Originally Posted by Jon Ruyle
Really, you just need to know that F/1.2 lets in about 225% as much light as f/1.8

That's why I put a questionmark behind my 1.25 stop-calculation [:P] Didn't have a clue it would be that much....I figured: 1.4 would be a half-stop darker than 1.2 and a 2/3 stop lighter than 1.8, sum it up and I ended with my 1.25-stop guess. But I guess proper math won't let me sum it up like that??[:#]