This is a question that has been bugging me for a while, and I'd like our prodigious panel of experts to weigh in on it, please.
My light meter (Minolta Flash Meter III) reads in 1/10th stops.
My vintage lenses have settings in partial f-stops...
I understand that f6.3 would read as "f5.6.5" on my meter, but f4.5 on my Wollensak Velostigmat equates to what, exactly in tenths-of-a-stop on my meter?
Thank you!