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A sneaky way to guess the appoximate exposure needed
Old 06-12-2019   #9
Solinar
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Join Date: Aug 2004
Location: Austin, TX
Age: 66
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A sneaky way to guess the appoximate exposure needed

A projection print scale is a varied neutral density filter that allows you to quickly get close to the exposure time needed for a particular negative at a particular aperture.

The way it works:

* Place the projection scale of a small sheet of RC paper, expose an image for 60 seconds
* Then develop the exposed sheet of RC paper
* Look at the collection of images
* pick one of the wedge shaped images that looks close to what you want.
* Look at the scale for the time in seconds for that slice of the pie.

Delta 1 Projection Print Calculator Scale 4x5"
https://www.bhphotovideo.com/c/produ...zp_D_BwE&smp=Y
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