Posts: 3,823
Joined: Feb 2014
Reputation:
224
2019-07-19, 13:20
(This post was last modified: 2019-07-19, 13:20 by Warner306.)
DCI-P3 is the correct 3D LUT for current displays. It is the color gamut recommended by the developer of DisplayCal for wide color gamut displays.
The reason is that you want to create a 3D LUT in the smallest gamut possible without clipping any colors at the edge of the gamut, and DCI-P3 matches the largest available gamut of any current video sources and displays on the market. 3D LUTs don't like undersaturated gamuts and BT.2020 is too large of a gamut for most displays.
Posts: 590
Joined: Jun 2014
Reputation:
6
However, I don't understand, if you're using the card in madVR Calibration, that's fine BT.2020 as a setting , instead , if you are using a 3DLUTs , it is necessary DCI-P3 , expresses doubt and confusion as well. The whole for 4K / HDR content.
Posts: 3,823
Joined: Feb 2014
Reputation:
224
2019-07-19, 22:30
(This post was last modified: 2019-07-19, 22:32 by Warner306.)
If you aren't using a 3D LUT, you want to send a color gamut that the display can recognize that does not convert the source values. That would be BT.2020 because BT.2020 is the standard color gamut used by UHD content. No correction of the source values or display is required here.
If you are using a 3D LUT, DisplayCal knows what the display is going to do by measuring its response to test patterns when you create the 3D LUT and can adjust the display's output as required. The 3D LUT works best when it is about the same size as the display's color gamut, which will be + or - DCI-P3. Current video sources are also mastered in the DCI-P3 color space within a larger BT.2020 container. So DCI-P3 3D LUTs should be more precise than BT.2020 3D LUTs because they are the best match for the videos and displays they are trying to correct. Color correction is involved here.
You can also use a DCI-P3 3D LUT to correct BT.709 sources because the 3D LUT should map the BT.709 color coordinates of SDR videos within the larger DCI-P3 3D LUT. So both SDR and HDR content would have the correct colors without any over or undersaturation.
Posts: 590
Joined: Jun 2014
Reputation:
6
Thanks. I have to save this analysis on a Word document!!!
Posts: 61
Joined: Oct 2018
Reputation:
0
2019-08-07, 20:01
(This post was last modified: 2019-08-07, 20:04 by giulianoprs.)
[font][font]Ctrl J !!!!![/font][/font]
Posts: 61
Joined: Oct 2018
Reputation:
0
[font][font]Ctrl J[/font][/font]