Archived posting to the Leica Users Group, 1999/07/27
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On 27 Jul 99, Mark Rabiner wrote, at least in part:
> "Noel H. Charchuk" wrote:
> > Alex asked:
> > What does the 'f' in f-stop stand for?
> ><snip>
> > According to the Ilford Manual of Photography, relative aperture is the
> > relationship of the focal length of the lens divided by the diameter of
> > the effective aperture. N=f/d. "The numerical value of relative aperture
> > is usually prefixed by the letter f and an oblique stroke, eg f/8. The
> > letter f and the stroke serve as a reminder of the relation between
> > relative aperture, effective aperture and focal length. The relative
> > aperture of a lens is commonly referred to as its f-number"
> ><snip>
>
> In other words: you don't know!
> Mark :-) Rabiner
WTH you talkin', man? I thought he done good!
- --
Roger
mailto:roger@beamon.org
Thought for the day:
When in doubt...
manipulate the data.