Could BG-R be my display type?

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  • #143084

    Ben
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    I have a Vizio V5-555J01.    I saw green tent and other colors at 1 to 28 RGB color patch.   I adjust green at 5 , 10 and 15 to remove greenish look.   and the green was off using white led display type.   I picked BG-R and then red was reading way less and closer to green than white led correction.    Just a 2 point correction and the delta L of primary colors is closed than white led display profile.    White looks white but it always does to my eyes.

    That BG-R is not for screens with 90% srgb coverage ?

    #143178

    daviangel
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    Yeah Vizio likes to use BG-R on their displays helps increase color saturation or something?

    Anyways, you can test it on this webpage: http://www.lagom.nl/lcd-test/subpixel.php

    My Vizio show black line on right so definitely BG-R!

    #143183

    Ben
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    Rtings says it is BG-R.   Time to get my glasses to see a 4k 1to1 pixel screen.   I can not really see that good and could not see a line.  I will try again.  That would be a 4096×2160 and not 3840×2160?   I’m not sure what it really is.  I think it is RGB led now.   Someone said that had to be wrong.   It does make my primary’s not go to 255 but it does match visually with a color filter to get white 255 to match color 255.   That is in uncorrected apps so it would be wrong in color apps.  I used the Edid profile and eliminate that problem.  Other corrections give 255 green.   The secondarys are really close to 255 with the wrong correction.

    Now it tests like a RGB led .    When it is set to factory default it was 10800k white in warm gamma mode.   The RGB value of colors the matches the best in that mode.  That means red is 10,240,12, green is 40,242,50,blue is 20,25,230.   the secondary colors match up to in RGB comparing cyan to yellow of its green and the yellow to magenta and magenta to cyan.   The 2 parts of color for each secondary is close so hue is right too.   I use the TVs Edid coordinates of its white and it does say its native color temp is Wx0.28,Wy0.29.  I looked it up and its a magenta D10800k.  I made guess and not exact numbers in this post.

    I set factory warm to D65 and now warm is D65 in normal mode.  I set it with 2 point white balance in factory mode.   Make sure contrast is at 50 and eliminate color clipping white with the 2 point offset controls.   I think its better than useing contrast which messes up the 20 point controls.   I cant get blue 20 point controls to be all right so some are not used and some cover a wider range of white than 5%.

    #143184

    Ben
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    It shows bgr on my screen on 200%scaleing in 4k in with 4:4:4 color on the tv turned off.   When I turn 4 4 4 on the black line goes away.   Scaleing issue?

    #143185

    Ben
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    How do you convert LCD white led to LCD to GB-r-LED?   Reason is displaycal info on the 1st page says GB-r has 99% adobe RGB coverage and Vizio V series has 90% SRGB coverage.   Adobe is wider gamut.   White led is for standard LEDs with up to 100% SRGB.

    #143193

    Vincent
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    How do you convert LCD white led to LCD to GB-r-LED?   Reason is displaycal info on the 1st page says GB-r has 99% adobe RGB coverage and Vizio V series has 90% SRGB coverage.   Adobe is wider gamut.   White led is for standard LEDs with up to 100% SRGB.

    Did you measure it? Where are the primaries? to discard weird blue native off typical blue causing a lot of out of gamut colors hence 90%.

    Rtings says it is BG-R.

    Unless they show spectral power distribution… meaningless statetment.

    Can you link that review, seems to be a lot of Vizios but I did not find that model by name “Vizio V5-555J01”

    • This reply was modified 1 year, 2 months ago by Vincent.
    #143195

    Ben
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    https://www.rtings.com/tv/reviews/vizio/v5-series-2021  .    I do measure it.    It is close.    This is monitor info.  Color characteristics
    Default color space…… Non-sRGB
    Display gamma………… 2.20
    Red chromaticity……… Rx 0.643 – Ry 0.334
    Green chromaticity……. Gx 0.313 – Gy 0.620
    Blue chromaticity…….. Bx 0.154 – By 0.053
    White point (default)…. Wx 0.280 – Wy 0.290

    HCFR    chc and a pdf report attached.

    Log file from displaycal report on calibrated display.

    Switching back to calibration being verified
    16:59:42,578 Black = XYZ 0.1381 0.1169 0.3281
    16:59:42,578 Red = XYZ 39.707 20.379 1.696
    16:59:42,578 Green = XYZ 39.677 76.224 10.311
    16:59:42,578 Blue = XYZ 17.464 5.633 89.295
    16:59:42,578 White = XYZ 102.754 108.197 117.142

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    #143198

    Ben
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    It does fix the 25% blue saturation with 4 4 4 full color on.  .  HCFR just has red at 102.631 red instead of 108.35.   Means it shows red as 249,0,18 .   All of them or 250 instead of 255 since not at 108.34 white.   I printed to pdf the rgb and the xyY report of colors with the rgb correction.

    • This reply was modified 1 year, 2 months ago by Ben.
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    #143199

    Vincent
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    It may be old White LED or WLED PFS with simulated primaries like Benq sRGB PD series, PD2705Q/U, likely to be one of these in displaycal CCSS database, or “PFS family” CCSS in default bundle in  DisplayCAL for i1d3

    Calibrite Display Pro HL on Amazon  
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    #143200

    Vincent
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    “PFS family” = a mix of WLED PFS with P3 or sRGB primaries. while HP Z24x G2 = WLED PFS AdobeRGB green P3 red and Panasonic VXX = WLED PFS almost P3 (a littel less in green)

    Ploting CCSS for Benq PD2705 models with Argyll specplot or DisplayCAL “i” button will show how it gets sRGB only despite being WLED PFS with those 2 spikes in red and narro green. Ypu’ll see the “mix” or the spread of the “left toe” in red channel.

    • This reply was modified 1 year, 2 months ago by Vincent.
    #143205

    Vincent
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    That BG-R is not for screens with 90% srgb coverage ?

    This TV has a BGR subpixel layout, which negatively impacts text clarity when using it as a PC monitor. However, it isn’t a big issue and doesn’t affect the overall picture quality. You can read more about it

    “BGR” is not about led type (spectral power distribution, thus correction)  but about subpixel ordering as you se in the review (vs typical “RGB” ordering). This may cause some issues on text unless you ustomize clear type in windows because default font antialias is meant for RGB ordering.

    #143206

    Ben
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    Good to know.   Those P3 primarys in ccss can work in sRGB.    Is it just the Benq PD2705 models?      I like BenQ it has got my name in it.

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