Nikon F 4 Instruction Manual
Also see for F4: Instruction manual
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Contents
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MIRROR LOCKUP LEVERA highly efficient, tungsten-alloy shutter balancer is incorporat-ed in the shutter unit. The balancer operates during shutteroperation to overcome vibration normally caused by the shuttercurtain in other cameras.When using super-telephoto lenses or doing photomicrogra-phy, it is necessary to reduce camera vibration to the absoluteminimum. To lock the reflex viewing mirror in the "up" position,push in the depth-of-field preview button and rotate the mirrorlockup lever counterclockwise until it stops.With the mirror locked up, you cannot operate the camera inany Auto Exposure or autofocus mode, even though the view-finder LCD may indicate otherwise. Any indication of light bythe LCD is a result of spurious light entering through theviewfinder eyepiece. |
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