Problem with a 0 black reading

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  • #10681

    stef22
    Participant
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    Good morning Florian!

    My projector (JVC RS500) is givine my i1DisplayPro a hard time: The meter is unable to read its black level. It starts giving a reading at 3% only.

    So, no matter what I chose when creating a 3dlut, the resulting gamma is a flat line down to 0ire. I would like to brighten the lower end in a “1886” way though, to “open up” the shadows (ie going from a 2.4 gamma from 100 down to 20, and then gradually reducing the gamma as I approach 0ire).

    there is no black crush though, as I can still barely see the 17 bar flashing on my brightness test pattern with and without the 3dlut activated.

    Is there  way get my gamma to behave the way I want it? I have tried to adjust the lower end of my gamma curve afterwards using my projector’s internal controls. I have gotten quite close to the curve I want, but is that a good idea to adjust my display’s settings after profiling it?

    • This topic was modified 6 years, 2 months ago by stef22.

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    #10706

    Florian Höch
    Administrator
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    Is there way get my gamma to behave the way I want it? I have tried to adjust the lower end of my gamma curve afterwards using my projector’s internal controls. I have gotten quite close to the curve I want, but is that a good idea to adjust my display’s settings after profiling it?

    Adjusting a display after profiling should not be done generally because the profile will then no longer describe the display accurately. In the end, it’s up to you though if you can live with this.

    #10729

    stef22
    Participant
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    Thank you. So, is there another way to modify the gamma response of my display between 0 and 20 ire if my black level is measured as 0?

    #10738

    Florian Höch
    Administrator
    • Offline

    Thank you. So, is there another way to modify the gamma response of my display between 0 and 20 ire if my black level is measured as 0?

    Not that I can think of.

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