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Gamma shift while capturing dual link in ProRes 444

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Arthur Puig
Gamma shift while capturing dual link in ProRes 444
on Jul 23, 2010 at 6:07:50 am

I'm digitizing dual link in Prores 444, against single link in ProRes 444, and I can see that the dual link has the blacks at around 10 or so, whereas in single link is at 0.

How can I fix that?

Thanks!


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gary adcock
Re: Gamma shift while capturing dual link in ProRes 444
on Jul 24, 2010 at 10:58:55 pm

Ok
You know the drill, machine specs, software and OS versions...
Are you using an easy setup or did you modify an rgb setup.

What is your original? A Log file often looks flat while that single link will be under Rec 709 ( check my blog for a log recording vs. a linear rec 709 of the same clip.

gary adcock
Studio37

Post and Production Workflow Consultant
Production and Post Stereographer
Technology Development
Quality Assurance Assistance

Chicago, IL

http://blogs.creativecow.net/24640



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Arthur Puig
Re: Gamma shift while capturing dual link in ProRes 444
on Jul 25, 2010 at 7:15:15 am

Using Mac Pro octo, Kona 8.0 drivers and FCP 7.0.2, digitizing dual link in Prores 4444 from a HDCAM-SR, blacks are lifted. Blacks are OK when digitizing from HDCAM-SR in single link in ProRes 4444


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Fred Connors Jr.
Re: Gamma shift while capturing dual link in ProRes 444
on Jul 26, 2010 at 1:40:49 pm

It is 7.5 not 10, and it is usually in the setup playback preferences of the HDCam deck

Fred

The Troupe - Modern Media Design & Production


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gary adcock
Re: Gamma shift while capturing dual link in ProRes 444
on Jul 26, 2010 at 2:07:34 pm

[Fred Connors Jr.] "It is 7.5 not 10, and it is usually in the setup playback preferences of the HDCam deck"


THERE IS NEVER "SETUP" IN DIGITAL FORMATS

sorry fred,

gary adcock
Studio37

Post and Production Workflow Consultant
Production and Post Stereographer
Chicago, IL

http://blogs.creativecow.net/24640



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Fred Connors Jr.
Re: Gamma shift while capturing dual link in ProRes 444
on Jul 27, 2010 at 1:03:42 pm

I stand corrected, Gary.

There is the option the add setup to the composite out, I was mixing my outputs.

Fred

The Troupe - Modern Media Design & Production


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