This process produces Bas relief using a darkroom-like technique. It effectively creates a monochrome interneg, binds it up “out-of-register” with the original, and then camera-copies it to brighten and make it permanent.

●   Open a file;

●   Drag the background to make a background copy layer (layers palette);

●   Select the copy;

●   De-saturate, then invert (this creates a monochrome negative);

●   The interneg may now be posterised using 2 to 6 tones for different effects;

●   Filter > other > offset (try 2 pixels in each box, as either plus or minus figures depending on the direction of shift required);

●   Check the relevant box to ensure that the edge pixels are repeated;

●   Select the background layer and create two adjustment layers;

●   Layer > new adjustment layer;

●   Select brightness & contrast, name it “more brightness” and set it at 50% normal;

●   Accepting will give the usual brightness & contrast window;

●   Set the brightness to 100%, and accept;

●   Repeat naming the second new adjustment layer “more contrast”;

●   Set the first to 50% normal, then to between 60% and 80% in the brightness & contrast window;

●   Select the background copy layer and drag it (if necessary) to be immediately above the background layer itself - this is important!

●   Set the blending to 35% normal for the background copy layer;

●   Select the “more brightness” adjustment layer and move the slider to brighten the image;

●   Select the “more contrast” adjustment layer and move the slider to adjust;

●   Flatten if required, alternatively select the background copy and change the blending to (say), 60% multiply;

●   Repeat adjustments of the two adjustment layers as necessary. Try other values and blending modes for different effects; and

●   Finally, flatten all the layers.