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Old October 16th, 2006, 05:10 PM   #1
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Keying with Cineform Raw

Please pardon my ignorance, but can someone educate me on the difference in chromakeying with Cineform Raw as against Cineform Digital Intermediate.
Can feature film quality keying be achieved using Cineform Raw and for instance the Silicon Imaging SI-1920HDVR camera.
Thanks.
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Old October 16th, 2006, 05:32 PM   #2
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Quote:
Originally Posted by Karina Nemuhina
Can feature film quality keying be achieved using Cineform Raw and for instance the Silicon Imaging SI-1920HDVR camera?
YES! Now don't get too confused over CineForm RAW vs CineForm Intermediate, there share a lot in common and can be used interchangably on the same timeline. CineForm RAW just means it is encoding the data directly from a large bayer image sensor (like that within the SI camera.) Yes you can do nice keys with this with After Effects Pro. The "flattened" results of the those composites can be stored within CineForm Intermediate. Think of CineForm RAW like your unprocessed negative, and CineForm Intermediate as you first generation working positive. Everything is handled automatically, just like editing high dynamic range DV (if that every existed.) :)
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Old October 16th, 2006, 07:08 PM   #3
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Keying with Cineform Raw

Thank's David, its much clearer now although i'd like to know if Cineform Raw can give me thesame or close to thesame keying results obtainable when using 4:4:4 uncompressed.
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Old October 16th, 2006, 07:42 PM   #4
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From the same raw bayer sensor then yes. Becareful when using terms like 4:4:4 when using bayer sensors -- bayer sensors are not natively 4:4:4 as they require a demoasic to generate 4:4:4. Bayer is like it own colorspace. If you created a uncompressed 4:4:4 output from a bayer sensor source, you have the same keying information as using CineForm RAW -- except CineForm RAW is 10+ times smaller than 4:4:4 RGB.
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Old October 20th, 2006, 07:35 PM   #5
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keying with Cineform Raw

David, your information has been well appreciated.
Thanks.
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