At 07:06 PM 8/17/01 -0300, you wrote:
>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.
This might be useful:
http://www.pinholevisions.org/resources/articles/poke.html
>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
>
>
>_______________________________________________
>Cameramakers mailing list
>[EMAIL PROTECTED]
>http://rmp.opusis.com/mailman/listinfo/cameramakers
_______________________________________________
Cameramakers mailing list
[EMAIL PROTECTED]
http://rmp.opusis.com/mailman/listinfo/cameramakers
