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How to brighten background picture on plane?

HorusRaHorusRa Posts: 1,664
in New Users

I've got a background pic on a plane but it is dark, too dark. Is there a way to brighten the image within DS? I've tried a few things but it didn't work. Help appreciated as always.

Comments

  • kaotkblisskaotkbliss Posts: 2,914
    edited October 2015

    What have you tried?

    *edit*

    Iray or 3delight?

    Post edited by kaotkbliss on
  • HorusRaHorusRa Posts: 1,664

    Iray.
    Ambient channel color to white. This brightened it pre-render, but image remained dark as it was before after render.
    I did something else in one of the other channels too, but don't remember which it was now, as it was last night when I fooled with it.
    I'm mostly fooling around in the dark with my experimentation because I have no idea what would brighten it in DS. cheeky

  • bitwelderbitwelder Posts: 212
    edited October 2015

    If you are using Iray, try applying the Iray emissive shader to the plane. Put the image map in both base color and emissive slots. Check that the base color is set to white. Set temperature to 6500k for an unbiased color treatment (by default it will be warmish like an incandescent light bulb). Adjust the luminance until it feels right. This is from memory--hope I didn't skip anything...

     

    If you are using 3Delight, put the image map in both diffuse and ambient slots. Make sure diffuse color is white-ish; ambient color may also need to be white, or maybe I got those mixed up. Make sure strength for diffuse and ambient channels is up all the way. 

    Post edited by bitwelder on
  • HorusRaHorusRa Posts: 1,664

    Emission channel: that's the other channel I put the background pic in last night. Though it did nothing.

     

    bitwelder said:

    If you are using Iray, try applying the Iray emissive shader to the plane. Put the image map in both base color and emissive slots. Check that the base color is set to white. Set temperature to 6500k for an unbiased color treatment (by default it will be warmish like an incandescent light bulb). Adjust the luminance until it feels right. This is from memory--hope I didn't skip anything...

     

    If you are using 3Delight, put the image map in both diffuse and ambient slots. Make sure diffuse color is white-ish; ambient color may also need to be white, or maybe I got those mixed up. Make sure strength for diffuse and ambient channels is up all the way. 

    I don't know if you forgot anything or not, but.........it worked perfectly. smiley It took me to get Luminance up to 40000.0 before it got bright enough. Thank you so much. I'm writing that down for future reference.  ::::::worship::::::

  • bitwelderbitwelder Posts: 212

    Glad it worked! I know what you mean about ginormous luminance values--while I'm at it, here's a tip for combating those....(see attachment)

     

     

    killicandles.jpg
    718 x 736 - 146K
  • HorusRaHorusRa Posts: 1,664
    bitwelder said:

    Glad it worked! I know what you mean about ginormous luminance values--while I'm at it, here's a tip for combating those....(see attachment)

     

     

    oh yeah I'm aware of that option and do use it, I didn't get after it in yesterdays project though as I was in a hurry kind of to test the render. Thanks for the info anyway though. smileyyes

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