Problem with subtle banding in dark grey/blacks when recording ProRes 422 at DVinfo.net

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Old March 18th, 2012, 05:29 AM   #1
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Problem with subtle banding in dark grey/blacks when recording ProRes 422

Hi,

I was just doing some green screen tests today and noticed that when recording in ProRes 422 some subtle banding appeared on my black t-shirt. Its kinda like you'd get if one of your lights was out of phase, but that wasn't the case. I did the same test in all ProRes settings, as well as recording locally to my Canon XF300 CF card, but the banding only manifested itself when recording in ProRes 422...

Just wondering if anyone else has had any issues when recording at the same compression?

Cheers,

Chris
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Old March 19th, 2012, 09:01 PM   #2
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Re: Problem with subtle banding in dark grey/blacks when recording ProRes 422

Hi Chris,

We already tracked down the cause of this subtle ProRes issue and a fix will be available in the next firmware update due shortly. DNxHD is unaffected.

regards

Paul Isaacs
Technical Development Manager
Sound Devices LLC
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Old April 7th, 2012, 05:29 AM   #3
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Re: Problem with subtle banding in dark grey/blacks when recording ProRes 422

Hi Paul,

Thanks for your rapid response to this :o)

Chris
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Old April 7th, 2012, 05:33 AM   #4
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Re: Problem with subtle banding in dark grey/blacks when recording ProRes 422

Version 1.09 of the firmware is out now and is stated to resolve this problem.

PIX Firmware Download | Sound Devices, LLC
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