An A3 picture of Lee. I plotted this image using three Bic Biros – one cyan, one magenta, and one yellow – having first split the image down into those three colour channels. I rotates the yellow and magenta channel images by one degree in opposite directions that rendered each channel using vertical lines, with more vertical lines in areas where a particular tone was darker. I then plotted each channel separately after rotating the magenta and yellow channel images again to cancel out the initial rotations and recreate the original tri-tone photo from which the plot was generated.