Grayscale calibration but up to a certain point

Hi all,
Is it possible to create a 1D grayscale calibration LUT, but decide how far down the scale to apply the correction?

For example: calibrate from 100% to 10%, and leave everything unchanged from 10% to 0.

thank you

Yes, you would need a license with the LUT Tools capabilities.

Steve

yes, I own that kind of license.
Can you please me tell what is the name of that function?

thank you

All information is in the User Guilds.
It will depend on exactly what action you really want/need to perform.

Steve

Yes, Steve, I really want to read the information available in the guide.
I'd just like you to tell me the exact name of the function, please.

As I said, I need to do this especially when creating 1D LUT tables for calibrating Sony projectors. In fact, applying standard correction LUTs often triggers ugly color inversions in the lowlights. These color inversions aren't present before the 1D correction LUT.

However, I don't rule out the possibility that in the future, in some specific cases, I'll also need this function when creating 3D LUTs, always deciding where to apply the correction.

Thank you.

Please look at the LUT Adjustment options in the Interactive Manual.
All such operation is explained there.

But if you have any colour issues with any LUT - 1D or 3D - there is something wrong with the profiling.
And certainly any colour inverse says there is something very wrong.
You really should define what is going wrong with your workflow and correct it.

Also, when making a 1D LUT is is often better to use a Grey & Primary Ramp (maybe with Secondaries) , or even a full volumetric cube.
The additional measurements help when the probe struggles with lowlight accuracy.

Steve

Hi Steve,
(Merry Christmas),
are you referring to the "grey blend" function?
please let me know.

many thanks

I was really saying that any issues with a LUT mean you have issues with the profile.
You need to work out why that is happening.

Steve