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post #4651 of 4654 Old 10-11-2017, 02:22 AM
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Originally Posted by gdim View Post
Hey @ConnecTEDDD ,

Thanks for the input! I wouldn't expect a 1% size difference to produce a 500+ nit difference in luminance, right? Or do you think this is possible? The luminance went from around 1300 nits with GDI and madTPG down to only around 720 nits with Masciola's patterns (either played through MPC-HC/madVR or with a USB directly on the TV).

So I'd assume it's more the metadata that are making the TV misbehave. I'll try altering the metadata on Masciola's patterns when I get some time and match them with what I see in madTPG and what was was provided by The Coolest here and see what I get.
Hi, 1% patch difference can have about 40 nits difference for example.

About the difference you see, the metadata or the RGB triplet is responsible.
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post #4652 of 4654 Old Yesterday, 05:43 AM
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Hi, I'm playing around with creating an HDR to SDR 3dlut from a previous calibration. I followed the instructions further back in this thread, and selected source colour space BT2020, tone curve SMPTE 2084 (roll off) and entered the display peak luminance as measured. I changed black output offset to 100% as I don't want a BT1886 type curve, I want the same curve as my SDR 3dlut (REC 709 2.4). Using this profile everything seems too bright and washed out, like it is a BT1886 type curve which I don't want. If I switch to MadVR's own HDR to SDR conversion with my display peak luminance set there, things look much more like I'd expect. Am I doing something wrong? If I open up advanced options in Displaycal, you can select 'source colourspace', but there is also a 'content colour space' which was defaulted to DCI P3. What's the difference between content colour space and source colour space? Should I be changing content colour space to REC 2020?

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post #4653 of 4654 Old Yesterday, 09:59 AM
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hey guys,
have been busy but still would love some help on the issue posted on the previous page

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post #4654 of 4654 Old Today, 07:55 AM
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Jvc Projector Hdr 3d lut

I read many posts but I don't understand. There is a simple way to create a good Hdr 3d lut for my jvc x5000 wiht Dispalycal or Calman on the same way I do for Sdr?
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