white walls

[helenistikyay]

hi everyone

this is an interior scene i am working on

i used pure white vray material for the walls but as you see

they are not white

what can you advice

thanks

[CJI]

Light Bounces off materials causing that materials colour to also bounce and bleed on to other surfaces. Your floor is bouncing a deep orange/red around the scene which can be seen clearly on the sides of your grey sofa which has taken on a strong orange tinge. Its been a while since i've used vray so i can't say exactly how to go about fixing this.

 

You could lower the GI multiplier of that material so it bounces less light.

 

Are you using a linear workflow? This will ensure your materials are as accurate as they can be and react more accurately and predictably to light?

[BrianKitts]

vrayphysical camera, sample in your image a space that's set to pure white, and input that RGB value in the camera's white balance slot.

 

just so you know though.... this will probably take your nice warm scene and make it super cold.... I know you want perfect white, but you may find that a little warmth is actually a good thing. So once you have the white balance set, just drag back the saturation slider on the color swatch to tone down the effect.

 

more illumination in the scene probably wouldn't hurt too. Even if your color balance is set to negate the GI color, without enough light white surfaces will be grey.

Edited March 29, 2010 by BrianKitts

[aristocratic3d]

select the objects contain orange material and set generate GI to 0.7 and select the wall set receive GI to 1.1 and generate GI to .8.

 

Hope that will improve the scene.

[braddewald]

Sweet method, Brian. I never thought to do that. I would also suggest a vrayoverride material for the floor (because it looks like thats where most of the orange GI is coming from). Clone your floor material but on the copy, use color correction to desaturate and brighten the diffuse map, and place this copied map in the GI override portion. In this manner, you can adjust the "orange-ness" of the GI.

[dlparisi]

You can also set the GI Saturation to less than the default of '1' under the Direct Illumination settings. This should force the GI bounced light to be just grayscale.

[Eric Sosa]

this is "color bleeding". there are many tips about it in the very forum.

 

convert your floor vraymat to an "overwritte mat" and keep the original floor vraymat as your main mat, instance all but the GI mat, here, simply use a vraymat with a soft red/orange color. you room will automatically be less orange when rendering.

 

I would not suggest you to mess out with the other objects in the scenes GI (including walls), you may never finish changing GI to all of them in order to match or compensate the orange bleeding and still be unhappy with the result.

 

 

good luck

[helenistikyay]

thanks all for help

i ll try them all