Release Note

When viewing transparencies on a lightbox, proper assessment can only be made when they are masked down with black card to exclude extraneous light spillage. When projecting transparencies on a screen, the best results are achieved with a total blackout in the room.

The images in this gallery section are displayed on your computer monitor by transmitted light, and so we treat them as we would transparencies. The black background is like turning the lights off for a slide show, and if you maximise your browser window, the black area masks off the rest of your desktop, exactly like you would do on a lightbox.