In article <4haokv$p24@news.onramp.net>, doylefam@onramp.net says...

>I received some incredible expert evidence which details how random
>production variations almost guarantee that only 30% of all cameras
>can be accurately focused.
>If one accepts this premise (and I do), does anyone know of any camera
>models where such errors can be ***EASILY*** adjusted out or
>normalized? [rest deleted]

Hmmm... I have checked many a Nikon body for focus accuracy, and I do
occasionally find one that is slightly out (not enough for most people
to notice, but I am a nut about such things) - maybe one in 15-20 or
so. I added VERY slight spacing dabs to the viewing screen of a mint
FA I wanted to keep (and use with that one screen....) where the screen contacts four plane-locating points in the finder. The Nikon F, F2, F3,
and probably F4 are relatively easy to adjust in both focus (using shims) and framing, though I have never seen one that had incorrect
focus, just slightly decentered framing. At least with Nikon, I would not worry (though I would [and do] check focus accuracy).
Hope This Helps