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Author Topic: Adjusting LCD's RGB during calibration  (Read 3583 times)

Serge Cashman

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Adjusting LCD's RGB during calibration
« on: May 04, 2006, 06:43:38 pm »

I understand that manually adjusting RGB settings on a non-DDC (less than 10 bit internal LUTs) LCD leads to the loss of some monitor colors and can possibly cause visible artifacts.

However sometimes it's unavoidable if I want to match white point on two separate monitors.

The question is - what is actually affected, where it gets stored and how it gets loaded?

Thanks in advance.
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bruce fraser

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Adjusting LCD's RGB during calibration
« Reply #1 on: May 04, 2006, 07:07:19 pm »

Quote
I understand that manually adjusting RGB settings on a non-DDC (less than 10 bit internal LUTs) LCD leads to the loss of some monitor colors and can possibly cause visible artifacts.

However sometimes it's unavoidable if I want to match white point on two separate monitors.

The question is - what is actually affected, where it gets stored and how it gets loaded?

Thanks in advance.
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You're adjusting the LUTs in the video card (which is basically the same as editing an 8-bit/channel image). The LUTs are stored in the profile. On Windows, how they get loaded depends on the calibration software and, conceivably, on the video card.
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Serge Cashman

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Adjusting LCD's RGB during calibration
« Reply #2 on: May 04, 2006, 07:12:40 pm »

Thank you. So I assume it would not affect the calibration of a second computer connected to the same monitor (unlike the RGB guns on a CRT).
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bruce fraser

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Adjusting LCD's RGB during calibration
« Reply #3 on: May 05, 2006, 01:37:59 am »

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Thank you. So I assume it would not affect the calibration of a second computer connected to the same monitor (unlike the RGB guns on a CRT).
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With digital connections, no, with analog ones, yes, because different video cards send different voltages in analog. In digital, it's all numbers.
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