Well, i worked there from 1991 - 2000......so it was kind of primitive compared to todays digital stuff....
Every theatre had it's own Vic 5 projector with a 3 tier platter system.
the light was provided by a 2000w xenon lamp which was focused manually from the back of the exterior lamphouse...
The cinema i was at had 10 auditoria, so lots of equipment and TONS of maintenance....
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you only had control of focus, keystone, lamp focus and that was about it. Picture quality was totally dependent on print quality.
Here are a couple of pics i found on the internet....
Rich