Hey Scott,
I just couldn't let 3% sit there as a description of the difference,
because we are often measuring shrinkage on archival materials and know
that anything over 1.5% is dicey running on sprocketed equipment. I think
the proper math is:
long perf - short perf / ((long perf + short perf)/2)
Aha!
http://www.wsmr.army.mil/RCCsite/Documents/451-00_Photography,%20Motion%20Picture%20Film%20Cores%20and%20Spools,%20Perforations%20and%20Other%20Technical%20Information/451-00.pdf
Go to page D-4... this is the print stock. The camera stock standard is the
same except that dimension B is 0.29
The film looks the same to the naked eye, it's just the distance between
the perforations differs by 3%.
It's not like 35mm where the perforation shape is different between the
camera and print stocks.
--scott
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