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Shooting a video projection on 35mm


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#1 Alex Birrell

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Posted 27 October 2012 - 02:34 PM

Hello,

I may be working on a project soon that would involve shooting some video projections. We would be shooting on 35mm with a Moviecam Superamerica. I have previously worked on a 16mm project shot with the Aaton Xtr that also involved video projections. On that project an annoying flicker was present in all the projected footage. The video projected was 25fps and we shot at 25fps. Was the flicker caused by an incorrect shutter angle or by the video being interlaced and is there any way around these problems for the upcoming 35mm project?

Many thanks in advance for your help :)
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#2 Phil Connolly

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Posted 27 October 2012 - 04:29 PM

Depends on the video projector - 3 chip DLP projectors don't tend to flicker since the refresh rate of the mirrors on the chip is very high.

But single chip DLP's can cause problems with the colour wheel causing strange artifacts. I did a project with a single chip dlp projector and got some strange colour and ghosting artifacts but it wasn't a problem for the type of production and only an issue on freeze frame, and no flicker problems:

I've not used LCD projectors so not sure if they flicker, but its probably not worth the risk.
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