As the camera rotates the large data plate on the back can be seen, this is an exposure guide. It gives the advice to use 1/50th sec. exposures, and caters for films from ASA 10 up to 32 for colour, and only as far as 200ASA for Black and White.

Start the image spinning by putting your cursor over the "Spin" side of the image, you can pause the animation in any position by touching the "Pause" side.