Abstract: An apparatus for optically projecting pixel-based image information onto a light-sensitive material (12) has an image generator (1) for physically representing the image information in the form of monochrome partial images in different exposure colors. A projected image of the physical representation is produced by an optical projection device (4) which includes an offsetting device (7, 38, 39, 38a, 39a, 38c, 39c) for laterally offsetting the projected image in the image plane of the apparatus. The offsetting device is controlled by a controller means in a manner that is dependent on the exposure color of the monochrome partial image currently being produced by the image generator.