Does anyone have an efficient way to measure the size of pinholes without
using specialized equipment? On the Bender website the pinhole camera
kit includes:
"Pinhole Measuring Device -- Use it with your enlarger to view and accurately
measure your pinholes, for the optimum in sharpness and controllability."
Anyone have it? Suggestions? I can probably figure something out, but
if you know how to do this it will save me a lot of "circling" around the most
efficient way to do it.
My first approximation would be to create a negative that has a line on it
that is, say, one inch long, and then set my enlarger so that the image of
the line on the baseboard is ten inches long (or twenty if I can go that high).
Once that is done the pinhole sheet can be put in the place of the negative
and the size (and shape) of the hole measured on the baseboard. Even with
only a magnification of ten, a 0.3mm hole (for a "75mm" pinhole) would be
3mm on the baseboard (or 6mm if I can go up to 20x).
Thanks.
Myron
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