TruNeg is a spreadsheet program that is quick, simple and easy to follow. There are no normalization or linearization procedures, it works on any printer with adequate UV ink densities, all photographic printing processes and all photographic editing programs.  

Based on the mathematics of the digital image and the logarithmic relationship between exposure and density, TruNeg negatives exhibit the true and full range of tones from the brightest highlight to the deepest shadow.  

Overview

Step1. Make a print of the TruNeg Control Negative,

Step 2. Choose three tones from the control negative print.

Step 3. Enter the three tones into a spreadsheet.

Step 4. Open and invert the image you want to print and open a curve window.

Step 5. Manually enter the 15 curve inputs and outputs generated by the spreadsheet.

Step 6. Print the negative then print the print

The download costs US$25.00 and contains the spreadsheet program and digital support files. No knowledge or experience of spreadsheets is required.

See video below and the Instructions for details.