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post #1 of 4 Old 01-09-2019, 02:40 AM - Thread Starter
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Bt1886 or powr law 2.4?

Hi all and happy new year

I want to ask is it more recommended to use bt1886 or a pure power law? And can i calibrate 2.4 for bright room at 150 nits? Is this possible and recommended? I will be re calibrating with teds lightspace, thus im asking the above for advise

Also on the 10 point gamma adjustment: should the white line sit above the yellow line or just below it of you know what i mean?

Thank You
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post #2 of 4 Old 01-09-2019, 03:21 AM
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Originally Posted by Mikedagreat90 View Post
Hi all and happy new year

I want to ask is it more recommended to use bt1886 or a pure power law? And can i calibrate 2.4 for bright room at 150 nits? Is this possible and recommended? I will be re calibrating with teds lightspace, thus im asking the above for advise

Also on the 10 point gamma adjustment: should the white line sit above the yellow line or just below it of you know what i mean?

Thank You
Hi, what display do you have?

When you have OLED (zero nits measured black), the target luminance per each grayscale step between BT.1886 vs. pure power low 2.4 is exact the same.

For day view you can calibrate using values between 2.2 - 2.4, with 150-300 nits (where there a lot lights/windows etc.).

The yellow line is the target line, when the gray line is above means that its lower the gamma (so its brighter in Y than the target gamma, you will have to reduce RGB balance to reduce luminance).

When the gray line is below the yellow line, its higher the gamma, so its darker vs. your target gamma, you have to increase luminance.

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post #3 of 4 Old 01-09-2019, 03:28 AM - Thread Starter
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Thanks Tedd. By the way its an LCD. I ill just use pure power law i take it so 100 nits for night 2.4 and 2.3 150-200 nits day. So on calman i will input a custom target of power law 2.3 correct?
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post #4 of 4 Old 01-09-2019, 07:07 AM
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So on calman i will input a custom target of power law 2.3 correct?
Yes, select gamma formula 'Power' with target exponent '2.3'.

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