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This topic comprises 3 pages: 1 2 3
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Author
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Topic: What causes border shadowing on the screen?
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Scott Jentsch
Phenomenal Film Handler
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Posts: 1061
From: New Berlin, WI, USA
Registered: Apr 2003
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posted 02-04-2011 06:04 PM
I attended a showing of Tangled with my daughter on Saturday at the Marcus Ridge Cinema in New Berlin, WI, and noticed a problem with the projected image, where there was a shadow that appeared around the entire border of the screen.
I mocked up a photo to show the effect I noticed:
![-](http://www.film-tech.com/uploads/uploads0503/border_shadow_on.jpg)
This is the same image without it, for comparison purposes:
![-](http://www.film-tech.com/uploads/uploads0503/border_shadow_off.jpg)
As misfortune would have it, I ended up in the same auditorium last night to see 127 Hours. Same problem appeared on that movie as well.
Given the uniformity of the issue, I'm figuring it might have something to do with the aperture plate? Is this a normal shadow that would not be visible if the image were increased in size so that the shadow would fall onto the masking instead?
Something else I noticed last night was that it appeared that a band of the screen was different than the rest. Just left of center, about three feet of screen reflected the light differently, which was quite noticeable in the slow shots of the desert in the movie. Looking at the screen up close after the movie didn't show anything obvious. Any ideas on what caused this?
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This topic comprises 3 pages: 1 2 3
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