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Correct Qualifier behavior?
Hi,
I am observing the following, grading r3d footage in LOG Space.
Using the Lift wheel I am crushing the blacks down to the “0” line on the waveform (and beyond).
Now I want to use the LUM qualifier to avoid touching the darkest areas.
I raise the Low Clip threshold, however I am not seeing anything happen in the blacks until I have raised the threshold to a Low Level of 52.
Is this normal? And is so, why? Why would the threshold not be much closer to “0”?
Thank you as always… Tobias
In Touch Media GmbH
Germany -
9 Replies
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Are you doing the key in serial or paralel node?
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Margus
https://iconstudios.eu
https://vimeo.com/iconstudioseu/videosDaVinci 10, OSX 10.8.5
MacPro 5.1 2×2,93 24GB
GUI 4000 / GPU GTX 780
DL 4K
Eizo Color
Scope Box
Full Ligthspace CMS -
Serial
In Touch Media GmbH
Germany -
Then you should be able to get proper key.
HAve you tested different modes HLS, rgb etc. ?
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Margus
Resolve 11
BMC 2,5k -
I wouldn’t worry about the numbers. Just worry about the results you see on screen and on the scopes.
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It’s normal. As I pointed out last time someone asked this, the qualifiers works in float space, and let’s you differentiate below black and over white values, as well as visible values.
https://JuanSalvo.com
https://theColourSpace.com -
Ah, ok… thanks. In the end, yes, I just looked at the results. Would the Offset also influence where the key starts to work?
In Touch Media GmbH
Germany -
I wouldn’t touch the Offset if the basic picture looks good. Adjust the qualifiers to match the picture; don’t move the Offset to change the qualifiers. Ignore the numbers.
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Why do you stay away from the Offset?
In Touch Media GmbH
Germany -
Offset can work in some situations. It all depends on the nature of the initial photography and exposure. There are very few absolutes in this business.
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