aea_arch Posted February 3, 2005 Share Posted February 3, 2005 hey everybody i decide to share a topic for discussion about V-ray G-Buffer/Color mapping its try to understand the concept of its work i hope a sharin from everybopdy first what is the color mapping and what the useful of every choice. [/img] and what is dark mult and channel and how we could get use from it [/img] thx for your coming thoughts Link to comment Share on other sites More sharing options...
BrianKitts Posted February 3, 2005 Share Posted February 3, 2005 Your dark and light multipliers are adjustments that can be made to your irradiance map. After you calculate your irradiance map and go to render your images, if the dark areas of your images are too dark, you can adjust the dark multiplier to adjust the irradiance map. Likewise if you are burning out in the light areas you can adjust the light multiplier accordingly for the inverse effect. But keep in mind, it's always better to correctly light your scene than using this option, because if you use too much of one side (dark/light) multiplier you begin to lose the contrast in your image, and thus will cause your image to start to look flat....... hope this helps! Link to comment Share on other sites More sharing options...
plastic Posted February 3, 2005 Share Posted February 3, 2005 the current vray version works with the max logarithmic exposure correction, which is much nicer to use. Link to comment Share on other sites More sharing options...
aea_arch Posted February 3, 2005 Author Share Posted February 3, 2005 its a graet tips from both of BKittsARC and PLASTIC to explain some points on our discussions i hope from all to do the same BkittsARC you talk about dark multiplayer plz if you know something about the the different between (linear multiply &Exponential and HSV exponential ) and G-bauufer output channels plz tell us and thx for you sharin Link to comment Share on other sites More sharing options...
BrianKitts Posted February 3, 2005 Share Posted February 3, 2005 caught me, I ommitted that from my reply....cause to tell you the truth I haven't tested the different functions, I primarily use linear, haven't had any odd lighting occurances to cause me to try the others. Link to comment Share on other sites More sharing options...
Tim Nelson Posted February 3, 2005 Share Posted February 3, 2005 the current vray version works with the max logarithmic exposure correction, which is much nicer to use. I'd have to disagree with that. When I switched to the latest version, I was getting these horrible results and I couldn't figure out for the longest time until I figured I had to turn of Viz's default exposure control. Do you have any examples of Max's exposure control vs. Vray's? I'd be interested to hear why you think it's better. Link to comment Share on other sites More sharing options...
Crazy Homeless Guy Posted February 3, 2005 Share Posted February 3, 2005 I'd have to disagree with that. When I switched to the latest version, I was getting these horrible results and I couldn't figure out for the longest time until I figured I had to turn of Viz's default exposure control. Do you have any examples of Max's exposure control vs. Vray's? I'd be interested to hear why you think it's better. same here. the first thing i do now is switch off max's exposure control. here is a thread i had on the choas forum... http://www.chaoticdimension.com/forums/phpBB2/viewtopic.php?t=9779&highlight=exposure Link to comment Share on other sites More sharing options...
alkis t. Posted February 4, 2005 Share Posted February 4, 2005 vrays ability to work with logarithmic exposure control is actually a very powerfull addition and i have to disagree with you guys . the result can be stunning and much closer to real lighting check the following thread http://www.chaoticdimension.com/forums/phpBB2/viewtopic.php?t=10323 may i also suggest that the best place to get help and support is the chaos forum itself regards Link to comment Share on other sites More sharing options...
Crazy Homeless Guy Posted February 4, 2005 Share Posted February 4, 2005 vrays ability to work with logarithmic exposure control is actually a very powerfull addition and i have to disagree with you guys . the result can be stunning and much closer to real lighting check the following thread http://www.chaoticdimension.com/forums/phpBB2/viewtopic.php?t=10323 may i also suggest that the best place to get help and support is the chaos forum itself regards i read the thread, but it doesn't actually show how powerful logarithmic exposure is. no before and after. the images were beautiful, and the user said they used logartithmic exposure control. ...is logarithmic exposure control more complex than something i could post-process in photoshop? does it use the depth of the image, or does it just process the pixels of the image? Link to comment Share on other sites More sharing options...
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