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Forums Maxon Cinema 4D Sunlight suddenly changing color unexpectedly

  • Sunlight suddenly changing color unexpectedly

  • Michael Szalapski

    March 28, 2011 at 9:26 pm

    It seems that, when my camera is in certain places, suddenly the light from the sunlight in my sky object suddenly goes blue. I’ve only seen it happen in this current project. Here it is (R12): 1810_skyissuer12.c4d.zip
    Render frame 200 then render frame 201. Why the sudden blue-ness? If the camera moves to a different location at that point in time, the light is the way it should be.
    Keep in mind, I’ve only been using C4D for about three months, so it could be something stupid.

    – The Great Szalam
    (The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)

    No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.

  • Brian Jones

    March 29, 2011 at 1:25 am

    it’s something to do with the material on the water, if you disable Transparency in the WaterLake material it renders normally…. something to do with the Absorption distance, if you increase that out to 1000 it looks normal. Don’t know why

  • Michael Szalapski

    March 29, 2011 at 1:23 pm

    Thank you. I would never have thought to check that property. I’m really curious why that behaved that way. Maybe when I have more time and more experience, I’ll experiment with it.

    – The Great Szalam
    (The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)

    No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.

  • Adam Trachtenberg

    March 29, 2011 at 10:05 pm

    That is very weird, but it makes sense when you think about it. Absorption measures how far light can penetrate into a closed volume. With an open object — especially something like a flat plane — there’s no way for the render engine to determine absorption distance. This is mentioned in the help documents.

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