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Pixel mapping intensities not rendered
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jedwards747
New Member
Posts:2 New Member

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2023-06-10 06:20

    When using fixtures with multiple pixels/cells, the dimmer/intensity of the individual pixels is not accurate.

    For example, the intensity channel of the entire fixture might be 100%, but certain pixels/cells might have RGB or RGBW color values that are very low, to achieve a dim color. Others might be off entirely, using a RGB value of all zeroes. Capture only displays these pixels as completely on (100% brightness, even if RGB mix would result in a dim color) or off (only if the RGB mix is 0/0/0). It would make sense if, instead of the brightness being based purely on the fixture's dimmer channel, for the brightness of each pixel to be calculated individually based on its color values.

    Please advise if this is just a limitation of the current version, or if there is any way around this. Otherwise, it seems like Capture cannot visualize multi-pixel fixtures properly.

    Thanks!

    Floriaan
    Veteran Member
    Posts:299 Veteran Member

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    2023-06-12 09:09
    I noticed this as well. But, when looking straight at the fixture (in my case an Astera AX-2) you can see that the pixels light up correctly as individual pixels, but the glow or light beam extends to the whole of the fixture. So if one pixel is lit, the whole fixture radiates light. I can imagine this is done to preserve gpu resources.
    Floriaan Ganzevoort
    Lighting Designer - Theatermachine

    Lars Wernlund
    Staff Member
    Posts:2016 Staff Member

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    2023-08-14 08:36

    Capture basically behaves like a digital camera would in front of the fixture. As a result of that intensities quickly get oversaturated. The fundamental issue is that your computer screen doesn't come anywhere near the brightness of the actual fixture.

    Reducing the exposure of the view and tweaking the hue clamp of the view will help you. Also not looking straight at the fixtures or enabling more bloom in the view may be helpful. As does having a good HDR monitor.

    Regards,
    Lars Wernlund

    Technical Director
    Capture Visualisation AB

    jedwards747
    New Member
    Posts:2 New Member

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    2023-08-15 00:23

    That makes a lot of sense. I will try those visualization settings you recommended.

    Thanks very much for your help!
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