Thread: Still have Gamma Shift in SL and 4444

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  1. #1 Still have Gamma Shift in SL and 4444 
    Why.. Why oh why do I still see this issue. Project setup is as follows

    Transcoded at full debayer to Prores4444
    Conformed in Final Cut, Sent to Color
    Graded in Color, using Panasonic 11 series plasma and JVC 23" over HD-SDI.
    Sent back to Final Cut. The rendered ProRes444 Files lose contrast, obvisouly due to a gamma shift. What the HELL Apple, I thought that was fixed in the new OS and 4444.

    So re-rendered everything in DPX clamping to Linear, everything is darker.

    Now re-rendering everything to DPX but clamped to Video, hoping that gets me to see what i want to see.


    All i want is when I look at a grade in Color and go back to Final Cut, they look the same on broadcast output.


    Anyone? I am getting fed up.
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  2. #2  
    Are you using Force RGB setting. I have had similar problems with that.
    Michael
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  3. #3  
    Yes, Should i not be?
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  4. #4  
    I had a similar problem that went away when I turned it off.
    Michael
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  5. #5  
    I was really hoping this would do it, but i am still having the same issue. It is a very slight shift, but noticable. The rendered PRORES files are just not the same thing i am looking at in color
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  6. #6  
    Was your final render out of color and back to FCP also in 4:4:4 or did you subsample to a 4:2:2 codec? The subsampling could be responsible for a slight shift, I would think.
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  7. #7  
    No everything was rendered back to 444. It is ever so slight, but it is definitely noticeable on my monitors. you would never tell the difference unless you alt-tab between color and FCP on the same frame
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  8. #8  
    I have tried everything...

    Changed the Ceiling and Floor IRE, turned off FORCE RGB, Turned off Broadcast Safe. Rendered to Uncompressed, rendered to 422, DPX, they all look wrong.

    I am almost done with Apple, how can you deliver Quality Controled deliverables when you can't guarantee what you are looking at is the same as what you graded.
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  9. #9  
    Senior Member Ido Karilla's Avatar
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    Are you using Kona 3?

    I get similar issues. Grading with the fcp.mga LUT and rendering with out has solved this issues for me but only while sticking to uncompressed all other apple codecs act deferent on occasion.
    KARILLA IDO
    OPUS DIGITAL LAB
    TEL AVIV
    ISRAEL
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  10. #10  
    no using blackmagic.

    Another problem is when you render a new 4444 file as a master, it shifts ever so slightly and when a render a h.264 to send to the client from that, it is way greener and less contrastier on my calibrated Dell monitor.

    I am so frustrated at this point, because i just want to show the client something, and want them to see what i am looking at and what I graded to, but they can't. I know these are slight difference and won't really be able to tell the difference without looking at them directly but I want to be able to stand by my quality, and frankly it seems working with Final Cut, i can't
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