>> I thought ALL AF lenses were AI-S also. What are the exceptions?
>
> The "G" lenses are not AI-S.
>>> I thought ALL AF lenses were AI-S also. What are the exceptions?
>>
[quoted text clipped - 3 lines]
>lens w/o an aperture ring (due to lack of
>backward compatibility with my older camera bodies).
Well ... it depends on *how* muc older the camera bodies are.
The 18-70mm f3.5-4.5 G (D70 "kit" lens) works nicely on the Nikon N90s
camera body -- other than the vignetting -- which happens to not be a
problem with mine, since it is a NC2000e/c -- the N90s film body was
mounted onto a back made by Kodak to turn it into a digital camera, and
the sensor gives a crop factor similar to the D70.
However -- not all cameras will be able to control the G series
lenses. Certainly my much older Nikon F bodies will be at a loss in
dealing with them.
> ..there really doesn't
>seem to be any reason for G series to
>not be AI-S except cost savings because the cameras that CAN use the G
>lenses don't look at the old mechanical
>AI/AI-S indexing. Thanks for the education!
They don't indeed. And note that quite a few recent lenses are
available both in the G format and in ones with the AI/AI-S indexing --
and there *is* a significant difference in the prices of otherwise
identical lenses.
Enjoy,
DoN.

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