chros

  • chros replied to the topic LG C8 Lut in the forum General Discussion 2 hours, 15 minutes ago

    Actually – after thinking about it more – I’m still not convinced! Note that we only talk about HDR10.

    You were right, it’s definitely not PQ. But it behaves differently in SDR mode.

    So, at first to get know how our TV behaves, I’m interested in the following 20p greyscale graphs (by HCFR) in calibration (!) mode:<br>
    – SDR: factory 1dlut + u…

    [Read more]

  • chros replied to the topic LG C8 Lut in the forum General Discussion 2 days, 11 hours ago

    So yes it is tracking gamma 2.2 when calibration mode is enabled.

    Thanks!

    Again, just look at the damn picture with your naked eyes in calibration mode! What do you Ccccc? 🙂 I tell you what: ~P3 gamut, ~10k WP, gamma ~2.2. No HCFR or sensor required, only your bioassy to tell it’s not PQ.

    😀 I wasn’t sure anymore 🙂 Now you convinced me! Tha…

    [Read more]

  • chros replied to the topic LG C8 Lut in the forum General Discussion 3 days, 1 hour ago

    Then the .cal file created with the profile can be uploaded.

    Thanks, that was the question.

    @Janos, I quickly measured the lowered gamma (2.13) unity 1dlut + generated 3dlut in calibration mode, compare it to the 2.2 one:
    – the curve is basicly the same, just shifted

    So maybe we have to do calibration as well in DisplayCal and include it in the…[Read more]

  • chros replied to the topic LG C8 Lut in the forum General Discussion 3 days, 1 hour ago

    @chros – Yes, the profiled HDR10 Technicolor mode is significantly darker than the factory Cinema mode. But dark grays look subjectively way too bright on this C9 in all factory modes, SDR included.

    I’m “glad” to hear that, so it’s not just me 🙂

    The tone response difference wasn’t nearly this prominent when I used this workflow (or CalMAN) on the…

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  • chros replied to the topic LG C8 Lut in the forum General Discussion 3 days, 4 hours ago

    @chros – You can find everything here (onedrive folder).

    Thank you!
    So, what do you see when you compare it to a unprofiled preset? Is the image darker for you as well? 🙂

    Oh,  and looking at you screenshots, I noticed that there’s a new DisplayCal version, and the alpha7 chipset (17 points cube) is also supported. 🙂
    Thanks @Florian!

  • chros replied to the topic LG C8 Lut in the forum General Discussion 3 days, 7 hours ago

    So yes it is tracking gamma 2.2 when calibration mode is enabled.

    Thanks!

    Again, just look at the damn picture with your naked eyes in calibration mode! What do you Ccccc? 🙂 I tell you what: ~P3 gamut, ~10k WP, gamma ~2.2. No HCFR or sensor required, only your bioassy to tell it’s not PQ.

    😀 I wasn’t sure anymore 🙂 Now you convinced me! Thanks!

  • chros replied to the topic LG C8 Lut in the forum General Discussion 3 days, 10 hours ago

    Note that Home is accurate in HDR10 but …

    Let’s just talk about HDR10 for now (I did/do), even dealing with this mode only is way more complicated than it seems.

    Ted misunderstood my intentions…

    He didn’t even talk to you, have you read the link I posted? 🙂

    “3) Baked Tone/Gamut mapping can’t be disabled… If you want to perform a 3D LUT for…[Read more]

  • chros replied to the topic LG C8 Lut in the forum General Discussion 4 days, 3 hours ago

    I watched half a movie yesterday with “unity 1dlut + user 3dlut (XYZ testchart)” (Cinema preset) and sometimes I switched between the unprofiled Cinema Home preset, and I noticed (in addition to the above notes):
    – profiled Cinema preset removes some veil/fog from the image 🙂

    I can confirm this, after watching couple of contents with it, in half…[Read more]

  • chros replied to the topic LG C8 Lut in the forum General Discussion 4 days, 3 hours ago

    My experience trying to calibrate the 1D LUT in HDR with Calman is that it’s unreliable. The panel is glowing after some white patches are displayed on the screen (visible in a completely dark room). So, when you try to display a pure black patch in such conditions, you are not going to get no light emitted from the panel, and I imagine the o…

    [Read more]

  • chros replied to the topic LG C8 Lut in the forum General Discussion 6 days, 7 hours ago

    May be factory modes work with neutral 3DLUT and use a custom 3×3 matrix instead.

     

    Hm, interesting thought. I’m getting run out of presets then to experiment with 🙂

     

    The 3DLUT (neither factory, nor custom) shouldn’t normally change the white balance if the 1DLUT was calibrated (or change the white point if the 1DLUT wasn’t re-programmed but…

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  • chros replied to the topic LG C8 Lut in the forum General Discussion 6 days, 12 hours ago

    My understanding of the behaviour is that the 3d lut does not affect the tv menu/GUI (and I think also the GUI in smart tv apps)

    Thanks, probably that’s the case, but what was strange for me that unity 1dlut disables (?) the color temperature completely. (I don’t mind this at all, just mentioned it.)

    I watched half a movie yesterday with “unity 1…[Read more]

  • chros replied to the topic LG C8 Lut in the forum General Discussion 1 week ago

    1. factory 1dlut + user matrix filled 3dlut (XYZ testchart)
      – I managed to create a WBRGB testchart by modifying the Testchart for colorimater correction: duplicate the W line, then delete the values from the duplicated W line -> it will result in black (the entry for it in ti1 file: 0 0 0 1 1 1)
      – deselected “Embed calibration curve …”
      –…

    [Read more]

  • chros replied to the topic LG C8 Lut in the forum General Discussion 1 week ago

    Also note that Game mode (I believe you are experimenting in Game mode)

    No, I ended up using:
    – technicolor for: factory 1dlut + matrix filled user 3dlut
    – cinema for: unity 1dlut + “full” user 3dlut
    – set up cinema home for: as cinema was beforehand (so I can easily switch between the 3)

    I repeat: 5 patches just won’t cut it with colprof (the A…

    [Read more]

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