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Display Calibration Light Illusion Forums / Display Calibration /  
 

TCL QM8B Calibration Problem

 
Author NebulaUK
ZRO
Male
#1 | Posted: 18 Mar 2024 14:34 
I am trying to find the control points for this TV but the results aren't coming out in a zig zag pattern as per the guide. They start off like a zig zag and then it becomes more of a rounded off shape is this correct or am I doing something wrong.

Author ConnecTED
LTE
#2 | Posted: 18 Mar 2024 17:01 
Set your contrast using a pattern with flashing bars, prevent clipping and then scan with LEGAL patchscale to find the code levels for the control points.

Author NebulaUK
ZRO
Male
#3 | Posted: 18 Mar 2024 18:16 
That's what I did do I need to set any specific settings in the colorspace app.

Author ConnecTED
LTE
#4 | Posted: 19 Mar 2024 11:18 
Which TPG do you use? Which video colorspace output?

Use LEGAL patchscale to scan for the 0-100% range.

Author NebulaUK
ZRO
Male
#5 | Posted: 19 Mar 2024 15:24 
I used Pgenerator with YcbCr444 output with 16-235.

Author Steve

INF
Male
#6 | Posted: 20 Mar 2024 11:47 
Please post your Profile, so it can be reviewed.

Steve
Steve Shaw
Mob Boss at Light Illusion

Author NebulaUK
ZRO
Male
#7 | Posted: 22 Mar 2024 14:41 
It's OK I used it as it was and it produced a great result. For TCL TVs do you recommend rec709 or BT1886.

Author Steve

INF
Male
#8 | Posted: 22 Mar 2024 14:43 
We never recommend BT1886, as it is a flawed concept: https://www.lightillusion.com/calibration_issues.html#bt1886

Steve
Steve Shaw
Mob Boss at Light Illusion

Author NebulaUK
ZRO
Male
#9 | Posted: 22 Mar 2024 15:04 
OK thanks the only reason I ask is because the TV uses this but I presume their is no harm in just correcting the points to 2.4.

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Display Calibration Light Illusion Forums / Display Calibration /
 TCL QM8B Calibration Problem

 

 
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