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"
- Andrew in Austin, Texas -
35mm Gear Bessa R, Leica II, - IIIg, - M2
Just for fun 35mm Gear a Kodak Retina IIa, a Rollei 35 S, plus a Voigtlander Vito II and Vito BR
Modern Medium Format Fuji GW 690III
Vintage MF Folders a Voigtländer Perkeo II and Bessa II, 2 of them - a ZI Mess Ikonta 524/2 - plus an Agfa Super Isolette & a Record III
Digital a D300 and a D700 with some primes - still going over a decade later
"Who spilled the Dektol on the bathroom carpet?"