If you consider f stops as fractions, they really make a lot of sense. f2.0 = 1/2 distance from opening to film, f4.0 = 1/4 distance et, etc, etc. Also, IIRC, the square root of 2 comes into play somehow.
Bill > > Okay, you weren't being tongue-in-cheek and actually I agree with you. When I look at f stops I think, "How archaic.", and "Who's the genius that thought this up, that everyone has to use forever afterward". I mean, everything tries to have a more user-friendlier interface these days: M$, operating systems, computers, VCRs, watches, cars, irons, everything. Why not a symbol meaning wide open (3.5 or whatever) and one meaning as closed down as possible (probably 22) and marks indicating either full stops or half stops in between? > > All kinds of people taking pictures these days, and there is no reason to stick with a user interface that is rather confusing, just because it's been around for a while. > > (The manual could tell the one who really wants to know which dot or which mark correlated to which f stop). > > Doe aka Marnie Hehehe. > >

