Oops!

[T3D john bercovitz <bercov@xxxxxxxxxxx>]

Couple of oopses here.  One is that some advertising appears to have 
been mistakenly sent to T3D.  Advertising goes to P3D (Until we get
SELL-3D up and running).

I said something about not knowing whether to pivot around the front
principal point or the entrance pupil (perspective point).  Well of 
course it's the front principal point because that is also the front
nodal point if the lens has air on both sides of it.  (Sometimes I
forgets.)

John B


------------------------------

End of TECH3D Digest 66
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