Jim Campbell, A Fire, a Freeway and a Walk, 1999-2000.

Pixels: 42 LEDs. Image: 28 x 36 cm. Depth: 256 levels x 3.

This work consists of 42 pixels around the perimeter of a frame facing the wall to create just the edge of an image. The side of the screen facing out from the wall is covered in black velvet to make it as black as possible. This work uses red-green-blue LEDs, each capable of 256 levels per colour. (J.C.)

Courtesy of the artist.