adjast colors

[nodar1978]

guys is there any isier weay to adjust colors in scen with real things, for example furniture. I need to get some color but I've got lightings in scene, and color is different after renderings. and client asking me exactly same color. but it takes long time

can u give me some ideas please

[Devin Johnston]

The colors of objects are going to be affected by your lighting especially if you’re using a GI render engine. If you are using a GI engine like MR or Vray then the colors of objects in your scene are all going to be a little different from what you see in your material editor due to lights effect on the object and the color pollution caused by all the different materials in a scene. For instance your client may want a pure white wall, but if you look around at any white wall you'll notice it's not truly white because colors around it and even the light is causing it to look more grey or tan. There is no easy answer; you will just need to experiment.

[Crazy Homeless Guy]

you can pinpoint a color in vray to be near the exact color by using a mathematical equation. it works well, but keep in mind that this may effect other colors in your scene. it is also vital that you are working in linear float for this to work. i often use this method to mathematically calculate my white point and ISO setting for perfect exposures.

 

http://www.cgarchitect.com/vb/170341-post2.html

 

 

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[blowback]

thanks Travis (and Vlado,)

 

I am gonna try this out.

 

Nodar1978,

 

Maxer is right. There are no easy answers for this. Color is very subjective. A material doesn't always look like the sample the client is supplying you, especially if they are reference photos......were were these taken , what environment what time of day etc. If they are showing you studio photos of a chair, that will look totally different in a "real" environment. Sometimes this needs to be relayed back to the client. A little long winded but you get the point......

[shaneis]

I recently heard a fantastic way to explain this to the client...

 

Grab a swatch of the upholstery material that you are trying to match and take a photo of it under fluorescent light, then take a photo of it under a lamp light, then walk outside and take another shot under daylight, even take another outdoors but in a shadowed area. Show these to the client and ask them which is the "right colour". It will make them see the relationship between true colour, perceived colour and light.

 

Hope this helps,

 

S.

Edited May 8, 2008 by shaneis