Painting a portrait with the iPad One of the most popular subjects in painting and photography is the portrait. For centuries, masters such as Rembrandt, Van Gogh, and De Vinci have explored the art of capturing a person's likeness and character with paint on a canvas. Today, artists—with the help of technology—are redefining what a canvas can be by painting portraits on mobile digital tablets such as the iPad. To show how this can be done, let's take a look at the process of producing a portrait, using your finger as a brush and your iPad as a canvas. The entire portrait was drawn using the Brushes app.