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    Yellowish Strange arcs in exterior render

    Scheduled Pinned Locked Moved V-Ray
    renderpluginsextensions
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    • M Offline
      mostafa999
      last edited by

      Hi all I noticed when I render an exterior scene I get some yellowish arcs in areas with indirect light, I have attached two pics 1R&2R, 1R is the original render, 2R I put the original image on photoshop and increased colour vibrance to see the effect better


      Original


      Increased the colour vibrance in photoshop so you can see the effect clearly

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      • Dave RD Offline
        Dave R
        last edited by

        What rendering app?

        Etaoin Shrdlu

        %

        (THERE'S NO PLACE LIKE)

        G28 X0.0 Y0.0 Z0.0

        M30

        %

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        • M Offline
          mostafa999
          last edited by

          @dave r said:

          What rendering app?

          vray sketchup, Adaptive DMC image sampler, irradiance Primary engine, light cache secondary engine

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          • G Offline
            Gwint
            last edited by

            I have the same problem ...http://sketchucation.com/forums/viewtopic.php?f=322&t=53929

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            • andybotA Offline
              andybot
              last edited by

              change the color of your box to a light gray. Vray will have difficulty with pure white color.

              Also do realize that there are only 256 levels of gray (in the 8bit RGB color space), so if you increase the contrast in an image like that, you will start to see the transition between different levels of gray.

              http://charlottesvillearchitecturalrendering.com/

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              • dcauldwellD Offline
                dcauldwell
                last edited by

                To me this looks like jpg artifacts. Outputting as a png file should see that 'rainbow' shading disappear.

                David

                Sketchup 2017
                (vray 2.00)

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