CHANGING THE LENS
To remove the lens from the camera, press down on the lens release button and turn the lens clockwise until the black dot on the the black dot on the front of the camera body. The lens will slip off easily.
To mount a different lens, place it in position in the camera’s bayonet mount, align the black dots and twist the lens barrel counterclockwise until the lens locks into place with a dick.
Note: In case of the fisheye lens, lock the mirror in the “up” position before mounting.
Caution: A body cap should be placed over the lens opening to protect the interior of the camera whenever the Jens is removed for any length of time. The lens opening should not be exposed to bright sunlight when the lens is removed, especially when the camera is loaded with film. When the Jens is handled or stored separately, front and rear lens caps should be used to protect the Jens surfaces and interior from dust and damage.
LOCKING UP THE MIRROR
The reflex mirror can be locked in the “up” position out of the optical path for use with the Fisheye-Nikkor 7.mm f/ 5 .6 and the OP Fisheye-Nikkor 10mm f/5.6, whose rear elements protrude into the camera body and interfere with the movement of the mirror. Locking up is also necessary for shooting with the Nikon Motor Drive at its top speed of 4 frames per second.
Turn the mirror lock knob upward so that the black dot on the knob lines up with the red dot on the camera front plate. Wind and release the shutter, and the mirror will remain locked up. To unlock the mirror, turn the knob downward until its black dot lines up with the black dot on the body. This should be dorre after releasing the shutter, otherwise the mirror will not return to its original position until after an exposure has been made.
FLAH SYNCHRONIZATION
The Nikon F is designed to synchronize correctly at all shutter speeds ( except T) with various types of flashbulbs ancf with electronic flash at speeds up to 1/60 second. To set the camera for flash, lift up and turn the milled synchro-selector ring around the shutter speed dial until the desired marking appears in the selector window. The table on page 27 shows which marking to use, depending on the type of flashbulb and shutter speed used. Photomic-series finders must be removed prior to this step.
When using FP, M or MF dass bulbs, select the color of the synchro-selector marking that matches the corresponding colored numbers on the shutter speed dial. The selector should be set at FX for electronic flash. The Nikon Flash Uriit BC-7 fits directly over the rewind crank and requires no synchronizing cord. For other flash units, the Nikon flash unit adapter must first be slipped into place over the rewind crank and the synchro cord plugged into the synchro terminal on the edge of the camera.
Note: Electronic flash units having no firing delay can be used at speeds of 1 / 60 second or slower. For units having firing delay, the shutter speed dial should be set at 1/ 30 second or slower. Flashbulbs designated “B” are for use with daylight-type color film.
