Nikon EL2 instruction manual Coupling Lever Lock/Release Operation

Coupling Lever Lock/Release Operation

The EL2 is fitted with a meter coupling lever at the base of the lens to provide for coupling between the metering circuit and the lens' meter coupling ridge. When the camera body is used with lenses offering automatic maximum aperture indexing, the lever remains in the normal position. However, when the camera body is used with lenses and/or accessories not provided with this feature, the lever must be locked up to permit ex- posure measurement via the stop-down method. To lock up the lever prior to mounting the lens, simply push in the coupling lever release and lift the lever up and out of the way for operation. To return the lever to its nor- mal position for operation with a lens or accessory ca- pable of automatic maximum aperture indexing, simply push the lever back down until the lever clicks into place; then, mount the lens as explained previously.