Lots of different cases, many of which aren't as bad as you think. AF or AFD lenses operate a lot like AFS lenses. Metering is the same, meaning all exposure modes work. They won't AF though; you'd need a to focus them manually. That varies depending which lens is under consideration. A lens that has a m/AF switch is usually sufficient.
Manual focus lenses (not AF lenses without an AF motor) have no electronics, so they provide no metering (and no flash metering either). That has to be done in manual exposure mode. You must select both aperture (with the aperture ring) and the shutter speed (turn the command dial), and moreover they must be compatible with the prevailing lighting conditions.
Bellows are more complex as they too vary and lens configurations differ too.
_____ Brian... a bicoastal Nikonian and Team Member
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