One simple way is to photograph the pinhole over a light box with a ruler
beside it, then enlarge the negative as big as you can and compare the
diamter of.the aperture with distance on the ruler. Comparators for threads
are said to work fairly well. I bought a set of pre-drilled pinholes and use
them for eyeball comparison.
----- Original Message -----
From: "Jean Hanson" <jhanson@pon.net>
To: <pinhole-discussion@pinhole.com>
Sent: Sunday, July 21, 2002 5:53 PM
Subject: [pinhole-discussion] pinhole size
> I have the math on how to figure the ideal size of the pinholes but how
> do you actually measure them. Does everyone but me have a microscope, a
> micrometer? what? Jean
>
>
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Received on Sun Jul 21 20:25:04 2002
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