Re: 5p vs. 7p and beyond (RBT S1)

[P3D Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Allan, I understand how the 5p stereo format came about to save
on film.  From the opposite size of the spectrum comes the RBT S1
format.  RBT, in a effort to provide a full-frame 35 mm pair with
a reasonable interocular, is leaving film of 4p size blank between
any pair.  This results in 15 full-frame pairs in a 36 exp. roll
(instead of 18).

I think this is a clever choice.  Film is relatively cheap today.
(This was not the case in 1947, I don't think.)  Having a camera
with a reasonable interocular spacing, that can be used for
close-ups, is much more important than getting a few extra pairs
out of a roll, IMO.

I will soon be writing more about the RBT and the results of 
spending two fun weeks together.  Right now I am busy packing
up and returning this baby to its ownwer.

George Themelis


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