mareogomez Posted February 24, 2015 Share Posted February 24, 2015 Studio/Institution: Personal projectGenre: Residential InteriorSoftware: 3ds max design 2015 , vray 3.0 , photoshop.Description: helllo, first time rendering interior... can someone tell me how come the shadows from the exterior is kind of red ??? filter color of the light is pure white. Thnx. Link to comment Share on other sites More sharing options...
Francisco Penaloza Posted February 24, 2015 Share Posted February 24, 2015 That color bleed, happens for two major reasons, one is Light source and the other is light bounce. If you light source is an HDRI you should check the white balance, V Ray camera also has a White balance control, but sometimes it is necessary to be fixed in the HDR it self. Check if you have any non compatible material in your scene, everything should be V Ray materials. Also you may have something outside that is very red or flat single color in that tone that is creating that red cast color in your scene. Link to comment Share on other sites More sharing options...
himanshuchoudhary Posted February 25, 2015 Share Posted February 25, 2015 If you light source is an HDRI you should check the white balance, Nice point, could you give some tips on how to go about doing this on an HDRI directly? I usually always control it through camera, but would be nice to control on the HDRI itself. Link to comment Share on other sites More sharing options...
MarcellusW Posted February 25, 2015 Share Posted February 25, 2015 (edited) Cant you just correct the white balance in Photoshop? Might save you a few hours of needless problem solving in Max. Looks good BTW. Edited February 25, 2015 by MarcellusW Link to comment Share on other sites More sharing options...
Francisco Penaloza Posted February 25, 2015 Share Posted February 25, 2015 Yes it could be fixed in Photoshop but it won't give the same results. Plus while you are doing that you can shift other colors and create a weird looking. There is different way to fix your color balance in an HDRI, in theory, this should not happens if the HDRI was crated right, there are tons of images on the net and I believe 80% of them are not properly calibrated. Long history short what happens is the low dynamic range of the Sun give you more color tint from the environment than the sun it self. (BTW this was explained in this mere website, look for that post it was actually very well explained by Jay Weston) So, one way to fix this would be paint a "fake sun" in top of the one in the image (BTW this has to be done at 32 or 16 bit depending of your image, ideally 32 bits) you should pain light yellow color, almost white. Now this is a try an error and with V Ray 2.x (not sure if V Ray 3 works better) will create those nasty white sparkles because the wide dynamic range of the image that the antialissing will fight to process. Other way is color balance the image so your spectrum is more balanced. Color curves and levels. Other way is desaturate the image it self, this can be done within Max with the color correct shader, or in any HDR image processor. Of course in this post, the problem can be also some object that is pure red or pink, a light fixture with an flat color or a wall or something that has a very strong color. Link to comment Share on other sites More sharing options...
mareogomez Posted February 26, 2015 Author Share Posted February 26, 2015 Francisco...i had an object outside my scene , with a non-compatible material on it. Thnx a lot for the help. Link to comment Share on other sites More sharing options...
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