Canon EOS 1 Instruction Manual - Page 72
Locking the Mirror Up
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5. Locking the Mirror Up Setting custom function F-12 (refer to pages 90-91) lets you swing the mirror up before opening the shutter and starting the exposure. This eliminates the slight vibration caused by mirror shock, ensuring maximum sharpness when taking close-up photos or using super-telephoto lenses. • Refer to "1. Setting and Resetting Custom Functions" on page 82 for instructions on how to set the custom function. • For best results with mirror-up shooting, we recommend using the optionally available Remote Switch 60T3. 1 Press the shutter button all the way to swing the mirror up. • The mirror will stay up for 30 seconds. If no operation is made within 30 seconds, the mirror will automatically return to its normal position without taking a picture. Pressing the shutter button again will return the mirror to the raised position. 2 Momentarily let up on the shutter button, then press it again completely to take the picture. The mirror returns to its normal position after the exposure is completed. • When shooting outdoors on a bright day or in a bright location such as a ski slope or a sea shore on a fine day, take the picture within 30 seconds after swinging the mirror up to avoid burning the shutter curtain. • Do not point the camera lens at direct sunlight when the mirror is in the up position to avoid burning the shutter curtain. • When the mirror-up function is set, the film is wound one frame at a time, regardless of the film winding mode (single exposure or continuous exposure). • If the self-timer is used in combination with the mirror-up function, the mirror swings up when the shutter button is first pressed, then the shutter releases automatically after a delay of 10 seconds (in 10-second self-timer mode) or 2 seconds (in 2-second selftimer mode). • The timer function of the optionally available Command Back E1 cannot be used in mirror-up mode. • When using the bulb exposure and self-timer modes in combination with the mirror-up function, a shutter release-type sound is heard when you remove your finger from the shutter button while the self-timer is operating, but no picture is actually taken. 72