Hi--

>Another section discusses how the camera, in programmed mode or shutter prefered mode, allows the lens to start closing down to a smaller aperture and then "capturing" the aperture lever, followed by a last meter reading to compute the final shutter speed that will be used (and which may be somewhat different than the one set in shutter priority) to get correct exposure. This section is explained in terms of AI or AI-S lenses, which can be used in the camera.
>
>In short, I can not find any section that discusses "linearization" of the aperture for AI-S lenses. If Nikon cameras are set up to make a "last second" measurement to recompute the actual shutter speed, then why go to the extra expense of linearizing the aperture?

If you check the small actuator lever on the rear of the lens, and physically try to approximate, say, f8 by pushing it until the lens
is just at f8 (with the aperture ring set at minimum), you will understand... (the lever has a very short throw, was never originally intended to do anything but be rapidly moved its whole throw to stop the lens down, and variation from one lens to another would make it difficult
to approximate very closely in that short throw a stop running possibly
from f1.2 to f16...). The cam allows an approximation of the aperture
based on the lever position. It isn't perfect, but better than without
the cam (pre AIS lenses), so a "prereading" of the actual stop is still required. AIS lenses will require less adjustment of the shutter speed before exposure than most non-AIS lenses...

>BTW: I would never think of removing the lens flange of one of my Nikon lenses to look inside. I'll take your word for it about the cam.

Do it all the time...;-) Some lenses need adjustment to optimize CRC,
infinity focus, and zoom-focus - MF Nikkors are well-designed and
well-made, but are not necessarily in optimum adjustment when bought...