This file is an image file that is useful in calculating the screen exposure time for polymer plates. Its use is described in the book Polymer Photogravure: A Step-By-Step Manual Highlighting Artists and Their Creative Practice available here. This file saves a step in that it can be used both for determining the screen exposure value for a polymer plate and also can be used for determining the upper and lower limits (Photoshop Levels) that will be used when printing the positive.

categories:  polymer photogravure, calibration, downloads, qtr   tags:  polymer photogravure, calibration, download, qtr