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P3D IMAX 3D projection

  • From: aifxtony@xxxxxxxxxxxxx (Tony Alderson)
  • Subject: P3D IMAX 3D projection
  • Date: Tue, 2 Jun 1998 15:09:58 -0700
>Andrew Woods wrote:

>IMAX projectors are fitted with an alignment adjuster which can be
>dynamically controlled by a computer. It is probably this system which was
>malfunctioning in the Arizona system. The system allows alignment errors
>(which may occur during filming, printing, etc) to be trimmed out at the
>projector end during the screening.  <

Wow! Really? I guess it ISN'T "obviously impractical to adjust the
alignment shot-to-shot during projection of the movie."

I have considered the possibility, but decided the engineering wouldn't be
worth the trouble.  I stand corrected on that, anyway. How much time lag is
there for the corrections? Can the system keep up with quick cuts? I think
I'll have to dig out my stuff on IMAX and recheck things.

til next time

Tony Alderson  aifxtony@xxxxxxxxxxxxx



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