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Some vectorscopes have a skin tone line to guide the correct color of human skins. However other vectorscope such as that built in FFmpeg does not have the skin tone line.

Is there a standard of the skin tone line? What is the angle of the skin tone line? Is there a difference between 601 and 709 color spaces?

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  • I had a discussion on another thread after posting this question. What I found is that the line varies on tools around 32 to 34 degrees at BT.709 color space.
    – kamae
    May 16 at 15:16

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