Gordon J. Holtslander wrote:
> On Sat, 15 Jul 2006, George L Smyth wrote:
>
> Soo - what would the fstop be?
>
> If the film was placed 30 mm back from your lips, and you could make a 2mm
> pinhole with your lips, that would be an F 15.
>
> I would really like to demonstrate this. Has anyone done it?
>
> Gord
It's somewhere in Renners book
taco
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Received on Tue Jul 18 17:48:23 2006
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