navnow Posted December 21, 2012 Share Posted December 21, 2012 Hi, Need help please!! This is the first time i am using combination of gamma 2.2/vray physical camera and vray sun. Almost everything is fine, except the colors. Not able to get the right colors, also colors look faded. For the roller doors, the client wants the color "Woodland Grey". Please check the attachments. Thanks! Link to comment Share on other sites More sharing options...
Stephen Thomas Posted December 21, 2012 Share Posted December 21, 2012 Don't use the material colour swatch. You need to place a VrayColor map into your diffuse slot, set it to 'specify 2.2' then use the colour swatch inside the VrayColor map to input your RGB values. Link to comment Share on other sites More sharing options...
Stephen Thomas Posted December 21, 2012 Share Posted December 21, 2012 Also, if you are saving out to linear image format (I'm guessing you are as your output gamma is at 1.0) then you don't want to be burning the gamma correction into the image. To fix this either check the box that says 'don't affect colors' in your color mapping settings or change the colour mapping gamma back to 1.0. Best option is to have it at 2.2 and check 'don't affect colors'. Link to comment Share on other sites More sharing options...
andstef Posted December 21, 2012 Share Posted December 21, 2012 I was wondering about the same thing! Thank you for the advise! Link to comment Share on other sites More sharing options...
Stephen Thomas Posted December 21, 2012 Share Posted December 21, 2012 I was wondering about the same thing! Thank you for the advise! This is something most people overlook and the cause of the washed out or grey tone that a lot of people complain about with LWF. Colours need to be linearized same as bitmaps. Link to comment Share on other sites More sharing options...
navnow Posted December 21, 2012 Author Share Posted December 21, 2012 Thank you so much for the advise! Roller door material - I used gradient ramp to create the roller door material. Could you please suggest, how can i linearize this? Thanks! Link to comment Share on other sites More sharing options...
Stephen Thomas Posted December 21, 2012 Share Posted December 21, 2012 It's still fine to use the standard colour swatches, just not if you're trying to match a specific RGB colour value. Use your eye and test till you're happy with the look. Link to comment Share on other sites More sharing options...
navnow Posted December 21, 2012 Author Share Posted December 21, 2012 Thank you Stephen Link to comment Share on other sites More sharing options...
davidallen Posted December 21, 2012 Share Posted December 21, 2012 The most simple way for your problem is to open for preview your reference bitmap in 3ds max and pick the color from image. In your case it is RGB 27\27\24. Link to comment Share on other sites More sharing options...
navnow Posted December 21, 2012 Author Share Posted December 21, 2012 (edited) Thanks for the suggestion David. I used max color correction > inversed the gamma value. It worked pretty good. Edited December 22, 2012 by navnow Link to comment Share on other sites More sharing options...
Ismael Posted December 21, 2012 Share Posted December 21, 2012 Using an RGB 94, 92, 87 and lighting a scene will not produce a viewed color of 94, 92, 87. Light affects the perception of color. In the bright daylight falling on the roller door there'll be a different appearance of color than on the shadow area. http://www.qualitymag.com/articles/88933-measurement--colors--colors--colors This old thread at the ChaosGroup Forum may give you an idea as to how to obtain "an exact RGB value for some (small) surface in our image" http://www.chaosgroup.com/forums/vbulletin/showthread.php?36937-Getting-an-exact-RGB-value Link to comment Share on other sites More sharing options...
navnow Posted December 22, 2012 Author Share Posted December 22, 2012 Thanks Ismael. Link to comment Share on other sites More sharing options...
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