MOUNTING THE LENS
To mount a lens, first push the camera's meter coupling pin to the right as far as it will go. Set the lens diaphragm at f/5 .6 and insert the lens into th IY bayonet mount, making sure that the coupling pin fits into the slotted prong on the lens. Twist the lens counterclockwise until it locks into place with a sharp click.
In lenses having no slotted prong, mounting is done at a position where its aperture indicator aligns with the coupling pin of the camera.
Maximum aperture indicator
In order to measure light at full aperture with lenses of different maximum apertures, the Nikomat ELW's meter must be adjusted for the maximum aperture of the lens in use. This must be done each time a lens is mounted. Turn the aperture ring all the way to the minimum aperture setting (largest f/number), then all the way in the opposite direct ion . This step automatically adjusts the meter to the maximum aperture of the lens.
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