Nikon F4 Body Only, F4S Stop-Down Exposure Metering, For lenses with fixed apertures

Stop-Down Exposure Metering

For lenses and other systems without automatic diaphragms

When the automatic diaphragm ring does not couple with the meter coupling lever of the camera, such as when using a PC -Nikkor reflex mirror or bellows attachment, focusing should be done with the lens wide open while exposure measurement and shooting must be done with the lens stopped down.

In A mode:

Take the picture with the lens stopped down. With a PC- Nikkor, correct exposure must be determined before shifting the perspective. To do this, first use the AE Lock; the lens can then be shifted to take the shot.

In M mode:

Stop down the lens to determine the correct exposure, then take the picture.

For lenses with fixed apertures

Because the aperture of a Reflex-Nikkor lens is fixed, in photo- micrography or telescopic photography, it is impossible to change the exposure by varying the aperture.

In A mode:

The F4'scomputer will automatically adjust the shutter speed. Take the picture by simply depressing the shutter release button.

In M mode:

Select the appropriate shutter speed (in 1 EV steps) for correct exposure. If a correct exposure cannot be obtained, use either an NO filter (if the scene is too bright) or supple- mentary illumination (if too dark).

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