| This setup is not correct. In looking at the thumbnails, the subtract layers have not been inverted. However, in looking at the text, the invert has been omitted. Step 4 should read;
"4. Duplicate the Blue Add 1-100, Green Add 1-100, and Red Add 1-100 component layers, moving each to the top of the layer stack in turn. Rename the layers by substituting Subtract for Add, and remove the word Copy (e.g., change Blue Add 1-100 Copy to Blue Subtract 1-100). Change the mode to Linear Burn, and set the opacity to 0%. Invert each layer (Command+I/Ctrl+I), then shut off the layer view for each Subtract layer."
I will be releasing a set of free tools that will do this correctly. Regretably the tool that comes with the book fails to change the mode of the Red Subtract layer. my tech editor must have been asleep here, as the text should have been matched to the tool. I mean, I should have gotten it right, but with the testing and all I often have many versions of a single tool, and it is easy to insinuate the wrong one.
sorry about the inconvenience. I hope you understand, however, the idea of the mixing, which is that inverted components burn to do the subtraction. You will find that the calculation creates a flat black.
THANKS for bringing that up. I'll need to add it to the errata! |