How to make your own 11 step wedge in Photoshop for use with alternative and historical photographic techniques. This step wedge is later printed on inkjet transparency material and used to create correction curves for various processes like cyanotype, platinum palladium printing, and photogravure (polymer).
When you start, be sure to record the Color Settings used in Photoshop. I suggest Adobe RGB (1998) and Gray Gamma 2.2 since they both are most widely used settings. If you tend to work in other settings, feel free to use them. Just make sure that your workflow is consistent and that settings match.
Look at my website for more information as it gets published.
http://www.ARTandWATER.com