P3D Re: 65mm vs. 75mm Lens Spacing

["Dr. George A. Themelis" <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

>I've been using a Stereo Realist with 70mm spacing for years and am happy
>with the results.  Would 65mm be too little or would 75mm be too much?
>    
>Jon says that the sales of 75mm FAR outnumber those of 65mm cameras.

I'd hesitate to buy an expensive camera based on such small difference.
Is there any other differences between the two RBT cameras that will
help you decide?  Why are the sales of the 75 mm outnumber than of
the 65 mm?  I doubt it is only the spacing of the lenses.  How about
the film format?

If this difference in spacing was the only difference, I would go with
the smaller spacing.  It is better suited for my kind of photography,
close-ups & people photography.  I was very happy with the RBT S1 (59 mm) 
that I evaluated for 3 weeks.  Got some excellent stereo pairs at close 
range.

I mentioned I got an ISO Duplex with 30 mm lens' spacing.  Less is 
better in a regular stereo camera, IMO.  I can always get more from twin 
SLRs.  Getting less is the problem.  But 65 mm is not really any 
different than 70 mm.  Nothing that can jump out right away.

George Themelis


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