A method of displaying an image with variable perceived depth using a display (1) including one or more at least partially transparent, substantially parallel imaging screens (3) located in front of, and overlapping with, a rear imaging screen (4),
characterised in that a physical image is formed on two or more imaging screens (3,4), each image being of substantially identical configuration and being sized and aligned such that like portions of each image are coterminous to a viewer observing the display, wherein at least two of said coterminous images are displayed with different luminance.