An old film of a portrait sketch, finished in about 2 hours and a photo was taken every brushstroke. The ‘model’ was actually a professional photographer who had an appointment pushed back an hour and came over to kill time in my studio. I had to paint the portrait (fast), remember to take a photo after every brushstroke (using my point and shoot), and keep him entertained.
This winter we’ll have artificial light in the studio and I want to try a long project time-lapse film. With natural light the colors change a lot over the course of a day and the changing hue is too distracting when sped up.