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BASIC OPERATION

K Making Multiple Exposures

Exposing the same frame of film with two or more images is an exciting technique used by many photographers to create dream-like scenes, abstract designs, motion studies, or humorous pictures. Your imagination is the only limiting factor in this creative process, because Canon has made multiple exposure photography so easy to perform with the EF camera. A multiple exposure button is located in the center of, the ON/OFF switch. After making your first exposure, hold in this button with your left thumb while operating the winding lever in the normal way. The movement of the film transport sprocket is stopped, while the winding lever re-cocks the shutter. Now you are ready for your next shot which will be in perfect registration directly on top of the first shot. This process may be repeated any number of times, and the frame counter is stopped until the film is actually advanced to the next frame.

•The multiple exposure button need not be de- pressed during the entire winding operation, but only needs to be held in at the beginning of the stroke.

•In multiple exposure photography, exposures on the same frame of film are additive. In the AE mode of operation, the Canon EF automatically deter-

mines the proper exposure needed for a single frame. When making multiple exposures, less exposure must be given to each shot. One simple way to do this is to reset the ASA ring to a higher setting, which will fool the camera into decreasing the exposure read- ing. Multiply the normal ASA of the film by 2 for a double exposure, by 3 for a triple exposure, by 4 for a quadruple exposure, and so forth. However, when making multiple exposures of night lights or a subject against a black background, do not reset the ASA ring, because the black areas in the scene will become overexposed.

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