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Whites progressively turning pink

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Chris Mushinskie
Whites progressively turning pink
on Mar 11, 2010 at 10:14:04 pm

Hi all,
This is my first post here. I'm an assistant at a posthouse and they've asked me to research this problem. They've been shooting subjects against a white background. The camera has been correctly white balanced. When I digitize the footage into Final Cut Pro, with every tape I digitize the white background becomes progressively pinker. Any ideas?

Thanks!

Chris


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john sharaf
Re: Whites progressively turning pink
on Mar 11, 2010 at 10:23:40 pm

Purity of white is a function in the camera of proper white balance, lens white shading, clip, knee, knee sat, gamma and then there are comparable settings in the recorder. To determine if the camera is truly at fault, you must bring it to the camera engineering lab and have a good look-see with proper charts, waveform/vectorscope and color monitor.

JS





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Mark D'Agostino
Re: Whites progressively turning pink
on Mar 12, 2010 at 2:32:38 pm

How does it look when you simply playback the recorded footage on a properly calibrated monitor even before going to FCP?

Mark D'Agostino
http://www.synergeticproductions.com


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Chris Mushinskie
Re: Whites progressively turning pink
on Mar 15, 2010 at 8:14:23 pm

Pink. It seems like it is being recorded to tape as pink. I was not at the shoot, but I was told the camera was properly white balanced and that the shots looked fine while recording.

Since I wasn't there myself and it is obviously being recorded this way, I'm going to have to guess that it isn't being lit and white balanced correctly.


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Bob Boccaccio
Re: Whites progressively turning pink
on Mar 21, 2010 at 4:38:51 pm

Just a thought...was the background lit with different lights than the subject. Sometimes Kinos look a bit pinkish compared to straight tungsten lights.

Bob Boccaccio, SOC
Baton Rouge, LA

http://www.boccaccioproductions.com


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Doug Beal
Re: Whites progressively turning pink
on Apr 16, 2010 at 8:09:01 pm

If it won't white balance correctly it's possible someone got into the white shading menu maybe thinking it was white balance. In that case you need to dig deeper see
http://blog.abelcine.com/2009/08/05/eng-essentials-white-shading-white-offs...

I don't remember if Varicam stores lens files but the wrong or a corrupt lens file will produce undesirable results as well

Doug Beal
Editor / Engineer
Rock Creative Images
Nashville TN


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