Nikon 1797 Digital Camera User Manual


 
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MIRROR LOCKUP LEVER—To lock reflex mirror in up position
When using super-telephoto lenses or performing photomicrog-
raphy, it is necessary to reduce camera vibration to the absolute
minimum. Lock the reflex viewing mirror in the “up” position by
rotating the mirror lockup lever counterclockwise until it stops.
With the mirror lock up, you cannot operate the camera in any
Auto Exposure or autofocus mode, even though the viewfinder
LCD may indicate otherwise. Any indication of light in the LCD is
a result of spurious light entering through the viewfinder
eyepiece.
When the reflex mirror is locked in the up position, make
sure not to leave the camera in direct sunlight. The sunlight
may enter through the lens and may damage the shutter
curtain.
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