I've developed techniques for creating freehand halftone murals. These are done with spray paint in black and white and in full color. I'm currently looking for new walls to paint!
I create halftone illusions freehand on paper and canvas, using a similar process as my murals. These are done the old-fashioned way with very little computer involvement.
I create high resolution digital masters, using a combination of custom software and digital painting, then make hangable pieces by printing or by engraving with a CNC or laser.
In the process of developing my halftone software, I created hundreds of animated halftone GIFs, some of which have been exhibited in digital art festivals around the world.