Canon A-1 Instruction Manual - Page 15

Canon 0 h Automatic Aperture Lever HANDLING THE LENS Lens Cap and Rear Dust Cap the tabs on both sides of the cap. As a pre- The lens is provided with protective caps for cautionary measure, please keep the lens both front and rear. Both should always be capped when not shooting. If the camera attached when the lens is not in use. were to be placed lens•up with the lens un• To remove the rear dust cap, rotate the capped in direct sunlight, for instance, the bayonet ring clockwise until it stops. The film might fog and the shutter curtain could red dot on the bayonet ring will be aligned be burned. with the positioning pin at the rear of the Hood lens. When the rear dust cap is removed. The lens hood is an•optional accessory which the bayonet ring is locked as a safety is very useful in preventing ghost images and measure and cannot be turned in either flare. To mount a hood, fit it into the direction. The rear dust cap can be re- bayonet mount at the front of the lens and mounted by aligning its slot with the turn it until it is tight. When not in use, the positioning pin and. pressing gently on the hood can be mounted in reverse on a cap, turning the bayonet ring counter. standard or some wide-angle lenses, which clockwise. enables both lens and hood to fit perfectly The front lens cap hooks into the lens filter into the camera's soft case. threads. It can also he attached to a double- Mounting Procedure screw type filter screwed into the lens. It is First make sure that the camera's stop•down easily attached and removed by pressing in lever is not locked in (if locked In, a red dot -16-