quizzy Posted November 28, 2003 Share Posted November 28, 2003 What's wrong with my couch and my green thingy on the floor... Didn't fo anything wierd, and set my diff and ambient color to very dark red... My brightness and contrast are set on 50. Physical scale is the same as my sunlight... Wierd stuff... Help pleaeaeaeseeee!!! Link to comment Share on other sites More sharing options...
Fran Posted November 28, 2003 Share Posted November 28, 2003 Hi Michiel, Are you using radiosity? You can try unlocking ambient and diffuse (I know, it's a no-no) and setting ambient to black. If you are using an Architectural material, you can try reducing the Intensity parameter. Link to comment Share on other sites More sharing options...
quizzy Posted November 28, 2003 Author Share Posted November 28, 2003 Yep I'm using radiosity. I've set both diffuse and ambient to very dark red... and I mean VERY DARK!!! see screenshot... Its still max5 so I don't have architectural materials.... Link to comment Share on other sites More sharing options...
Fran Posted November 28, 2003 Share Posted November 28, 2003 Hi Michiel, Try using the anisotropic shader and reducing the Diffuse Level. [edit here] Also I noticed that the diffuse and ambient are still locked. Did you try unlocking them and lowering the ambient value? Link to comment Share on other sites More sharing options...
makai Posted November 28, 2003 Share Posted November 28, 2003 Strange. Is your sunlight photometric? May be a logarithmic exposure control issue... Link to comment Share on other sites More sharing options...
quizzy Posted November 28, 2003 Author Share Posted November 28, 2003 well the strangest thing is that all my settings are normal.. Next post i'll have done the changes you told me fran.. lets see what this brings us.. Link to comment Share on other sites More sharing options...
abicalho Posted November 28, 2003 Share Posted November 28, 2003 Michiel, I didn't see you mention that you enabled "Exterior" in your exposure control. If you did not, lower the Brightness to around 30 and see what you get. Remember, the sun light is immenselly powerful. The computer sees 256 shades of RGB, your eyes see millions. I suspect your scene is only incorrectly exposed. Alexander Link to comment Share on other sites More sharing options...
Fran Posted November 28, 2003 Share Posted November 28, 2003 Hi Alex, What would be the point of enabling "Exterior" on an interior scene? The interior portions of the space are already very dark. :???: Perhaps adjusting physical scale down would help. There is ALWAYS going to be a problem with radiosity and sunlight setting stuff on fire. I get better results fighting it "locally" through material properties than "globally" (once log. exp. ctrl. brightness has been set to a reasonable level, that is). Link to comment Share on other sites More sharing options...
quizzy Posted November 28, 2003 Author Share Posted November 28, 2003 this is it..... Link to comment Share on other sites More sharing options...
Fran Posted November 28, 2003 Share Posted November 28, 2003 Hi Michiel, Gee, that made no difference, did it? :???: Try reducing physical scale to 1500 (I know, another no-no). I would do a quick test, but I'm rendering right now. Link to comment Share on other sites More sharing options...
quizzy Posted November 28, 2003 Author Share Posted November 28, 2003 Well ,I think I found the problem (rendering again now) You said unlocking yhe diff and ambient is a big no-no... well I did that to the main white material.. OOPS?!?!? And I've lowered the brightness to 30 and seems to be more accurate too.. But I still set the diffuse level on 30 in my couch material... well... lets see Link to comment Share on other sites More sharing options...
quizzy Posted November 28, 2003 Author Share Posted November 28, 2003 doesn't work.... orangemad Link to comment Share on other sites More sharing options...
abicalho Posted November 28, 2003 Share Posted November 28, 2003 Originally posted by Fran: Hi Alex, What would be the point of enabling "Exterior" on an interior scene? The interior portions of the space are already very dark. :???: Hi Fran, Exterior is nothing more than a Multiplier value for the Brightness. Exterior + Brightness of 50 = Not Exterior + Brightness of 25~30. His couch is on fire because it's getting a direct 90000lx light source in it. I agree the rest is dark, but this scene will need to be adjusted through exposure control. Lower Brightness, increase Midtones, Increase Contrast. Ambient Color, Physical Scale, those won't matter at all. Last, I saw Midtones is 0.1. It should start at 1.0. That could be the cause of the big difference. Hope it helps, Alexander Link to comment Share on other sites More sharing options...
Fran Posted November 28, 2003 Share Posted November 28, 2003 Hi Alex, I got a chance to test this. Daylight only + brightness at 30 is about the same as Exterior + brightness at 85. Is there really any difference otherwise? Either way you have to tweek the default value. I just noticed the mid-tones at 0.1. Sometimes I set it to .75 for deeper shadows. Link to comment Share on other sites More sharing options...
jucaro Posted November 28, 2003 Share Posted November 28, 2003 Try clamping your cd/m^2 value to match your physical scale value in your exposure (say 85K). I dont know why but this always works for me when I'm using regathering in my radiosity. Link to comment Share on other sites More sharing options...
quizzy Posted December 6, 2003 Author Share Posted December 6, 2003 Well, I found the problem: The problem was when you merge objects in your scene that are moddelled in another unit then you have to scale them down or up. Well this is the problem.... Max doesn't understand scaling when calculating radiosity.... hmmm... wierd... I had to reset Xform those objects, and collapse them into editable meshes.. that worked for me.. Link to comment Share on other sites More sharing options...
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