chips_007 Posted November 16, 2010 Share Posted November 16, 2010 Hi Guys Im trying to become familiar with Vray for sketch up and wondered if someone could help me with something? The room im doing is a bathroom, with no windows (so no external lighting), standard ceiling grid with ceiling lights plus other lighting under the vanity units. First question is, is it best to use rectangular lights as the ceiling lights? Second - if yes to above, why is it when I render I keep getting a faint black apprearance to all surfaces (when I've used rectangular for ceiling) and not a nice clean, lit up looking room.... any ideas? its driving me nuts! Thanks Pc: OS XP 64bit SUP: Version 7 Vray. Version 1.48 Link to comment Share on other sites More sharing options...
Jock Posted November 16, 2010 Share Posted November 16, 2010 Might be clearer if you post a picture. Link to comment Share on other sites More sharing options...
chips_007 Posted November 16, 2010 Author Share Posted November 16, 2010 The render isnt there yet but the blackness on the walls can be seen. Link to comment Share on other sites More sharing options...
Jock Posted November 16, 2010 Share Posted November 16, 2010 Are you reffering to the noise on the walls? If it is its down to settings, you need to up some settings to get rid of it or you could try upping the subdivs of your lights. As to what type of light is best i suppose it jsut comes down to what light you are proposing to use, so if its a rectangular tiled light then yeah thats fine, if its one using spotlights then uyse of them instead. Link to comment Share on other sites More sharing options...
chips_007 Posted November 16, 2010 Author Share Posted November 16, 2010 Yes, sorry, the noise. Do I up all the subdivs settings? or just 1? Link to comment Share on other sites More sharing options...
Jock Posted November 16, 2010 Share Posted November 16, 2010 Well i imagine all the lights of the same type are instances so i'd up all the lights and see how that goes. There is also a global subdic multiplier in the settings somewhere, if its similar to the 3dmax vray anyway but i find its better to do the lights individually to keep render times down. Also could up your lightcache and irrmap settings if thats the GI solutions youve used. Link to comment Share on other sites More sharing options...
chips_007 Posted November 16, 2010 Author Share Posted November 16, 2010 Ok right I see. The subdiv settings for each light are... Subdivs - 8 Photon Subdivs - 500 Caustic Subdivs - 1000 Cutoff threshold - 0.001 So, you think each one of the above needs to increase? for each light of course. Link to comment Share on other sites More sharing options...
Jock Posted November 16, 2010 Share Posted November 16, 2010 I'm not familiar with the bottom 3 settings, the top one is the setting i'd change in 3dmax. Try setting it to 24 and see how you fare. Link to comment Share on other sites More sharing options...
chips_007 Posted November 16, 2010 Author Share Posted November 16, 2010 Ok will do, thanks Jock :-) Link to comment Share on other sites More sharing options...
paneli Posted November 21, 2010 Share Posted November 21, 2010 What is your second bounce? Link to comment Share on other sites More sharing options...
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