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This topic comprises 3 pages: 1 2 3
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Topic: 16/35mm Projector?
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Bajsic Bojan
Expert Film Handler
Posts: 190
From: Ljubljana, Si, Eu
Registered: Aug 2008
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posted 04-23-2011 03:20 PM
since i did work 4 years on the ernemann 15 combo 16/35 unit w/ changeovers, i can say: - fair share of 'general' problems with the machine (2 or 3 igniters went, couple belts, about 10 broken reel axle things) - 16mm we couldn't get decent/fair sound, magnetic or optical, maybe also because of disastrous prints - inconsistent changovers soundwise(sometimes no sound on changeover, required restarts of projector) - 16mm gate was quite hard on film and had to be loosened alot => enter wow and flutter in sound and image - revolver issues (kept 'falling apart' and slipping, damn rotary screw thingies)
otherwise a nice machine for 35mm for picture stability and light uniformity, real nice and gentle on 35mm prints (ran a heck of a lot of acetate in various states).
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Stephen Furley
Film God

Posts: 3059
From: Coulsdon, Croydon, England
Registered: May 2002
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posted 04-24-2011 03:07 PM
quote: Advantages are: ... Dual mechanisms means one being down doesn't kill both formats; ...
But that doesn't really help much unless you have both 16 and 35 prints of the film.
quote:
Disadvantages are:
Requires 2 lamphouses and rectifiers per machine; Takes up a lot more space because of the lamphouses;
Not all installations used two lamphouses. Of the two places that I've seen them the ones at the Barbican Centre did, there were two machines, each with two lamphouses, and I think there were two auditoria, but I only saw one, and don't know what equipment the other had.
The Rio Dalston had one machine, but only one lamphouse, with a horizontal periscope system to divert the light to the 16mm head; a lever would swing one mirror out of the way for 35mm. The lamp to film plane distance would be greater than normal, so presumably there would have been a lens element to correct for this.
A few years ago there was an advert shown in cinemas which involved a projectionist giving an unusual interpretation of a famous film, I can't remember the details, but one of these machines, running 16 mm, could be seen in the background. I do remember that the back-tension on the feed spool was in serious need of adjustment. Somebody here will probably remember what it was for.
I've heard two suggestions as to where this was filmed, one was a preview theatre, and the other was Dalston. I think part of a second machine could be seen in the advert, and I'm pretty sure that there was only one machine at Dalston when I visited the box there, but that was a long time ago.
It takes more space than a normal machine, but less than two separate right-handed machines. Where two machines are installed one operating space can serve the inner sides of both machines.
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