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Topic: Floating focal point... still there
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Dan Chilton
Expert Film Handler
Posts: 191
From: Springfield, MO
Registered: Mar 2004
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posted 02-24-2007 11:16 PM
The focal point on my lamp (1.6k Orc) keeps moving around. I originally mentioned it here, but after trying all those things, it never seemed to rectify itself. I know it's a crappy lamphouse, which is why we're upgrading to a newer 2k Xetron next week, but the problem still perplexes me.
I made a quick flash animation to demonstrate the problem... here.
It only does it on certain occasions, but I can't figure out why, or what might be causing it to bounce around from side to side. When it does, I pull the bulb focus out so it's not quite as noticeable. The bulb's tight, contact connection is good, no magnets near the reflector. It's done it one two separate bulbs (both Osram), so I don't think it's that.
Also, we're a single screen, so don't ask me if my other lamphouses have the same problem... because there are none. I'm sure I won't care once I get the Xetron in, but it's bugged me for the last year and a half. And if I were to take a guess, I'd say it floats 1 out of every 25 shows. Turning the bulb off seems to help a little, but usually the problem just comes and goes as it pleases. Any suggestions/guesses on what might be causing this?
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