Re: current Kodak mounting

[P3D Peter Davis <pdavis@xxxxxxxxxxxxxxxxxx>]

> Dr. T. writes:
> 
> >There is nothing you can do while using the camera that will give you
> >misaligned slides!  No matter how much you tilt the camera, the slides
> >will be perfectly aligned vertically.
> 
> If this is so, why do many stereo cameras have spirit levels built into
> their viewfinders?  I know the Realist didn't, but I have an aftermarket
> one that was made specifically for it, so *somebody* thought there was
> enough of a need to actually manufacture one.  Even the RBT X2 has the
> option.

I think the confusion here is over the word "aligned."  Dr. T points
out, correctly, that the slide pairs within a properly function stereo
camera will always be aligned relative to each other.  That is, both
slides will have their vertical directions parallel, etc.  This does
NOT, however, mean that the slides are guaranteed to be aligned
relative to the horizon, the subject, or anything else in the view.
That's what the levels are for.

-pd

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Peter Davis		       "Education is not the		 617/873-4145
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