Changing the viewfinder
Five interchangeable viewfinders are available for the Nikon F: Eye-Level, Waist-Level, 6X Focusing, Action and Photomic FTN. The Photomic FTN finder incorporates the centerweighted thru-the-lens metering system and couples to shutter speed and aperture controls. With the exception of the Photomic FTN, all viewfinders are interchanged in the same way.
To remove the finder, press the finder release button on the back of
the camera body. The finder snaps loose and can be lifted out! To attach a viewBinder, set it in position and press down gently until it clicks into place.
press down gently until it clicks into place. The Photomic FTN has a pair of pincer-type clamps to position the finder and hold it snugly in place. These clamps must be loosened by depressing the finder lock lever when removing or
attaching the Photomic FTN.