Lil help over here...

[leoviale]

Hi, I'm making this scene for a clothes shop, and I set everything up, but when it comes to render, I'm getting this grainy results. I set the light diffuse subdivs to 1024, and almost all my most important materials have 24 or 24 reflection subdivision. The only way I found to solve this is checking the "Use interpolation" option, I use it when I have non important materials with less than 0.6 ref. glossiness. That is one way to get rid of the reflection grain, but when I need some details on my floor 4 example, I still use it without interpolation, and I can't find a way to solve this, I'm looking a solution that also don't drive me to excessive render times. Maybe I'm doing something wrong in my vray settings. Well, anyways, here I add a test rendering so u can see what I'm talking about, and the Vray settings I'm using on the scene, and in one of my materials. Thx.

 

 

[Dave Buchhofer]

in image sampler, uncheck the user sampler thresh.. and then turn the clr threshold value down some.. start with .008 and work down until the noise is ok, this works for everything in the scene though, so it can start to get slow if you have to turn it down too far.

 

alternately, turn up the reflect subdivs on the problem materials a lot.

 

checking use light cache for glossy can speed you up also, and shouldn't make a noticable visual difference.

[leoviale]

Thx m8, I'll try it, then upload the results.

[manta]

Yes definitely check "light cache for glossy rays" it will really speed things up...

in fact I just tested it, and its twice as fast with that checked...

Edited January 18, 2009 by manta

[leoviale]

Well, here it's the new test. It's still a bit grainy, but i think I have to play a little more with the materials glossiness subdivision. This render took like 9 hrs, I think it's because of all the light I used, 181 total, using photometrical IES.

Let me know what do u think about it and if u have some more info to tell me so I can improve it a bit more. Thx

 

[tasi55]

Hey man,

 

Really like your scene and your lighting. I am trying to do interior lighting myself but am having a whole heap of trouble. Would you be able to describe your method for placing IES light in a Vray scene, I am getting this crazy blotches and artefacts. I have been trying to use the light fittings and data from www.erco.com.

 

What I have been doing is merging the light model (erco file) into my scene then rendering, getting shocking results. Could you please lend me some advice. Much appreciated.

 

Cheers

 

Jay

[Arnold Sher]

Hi Leonard,

 

Your render looks cool eventhough i do not think you are getting the best out of it. Also i think you could defintely get away with less lights than what you are using. Probably for this space you need a third of what you are using hence excessive render times cause your computer needs to calculate lighting for everyone one of them. I think for that resolution you should not exceed 20-25 minute render times, granted we are running I7's...)) Anyway, i am sure my crew would be happy to look at your scene should you decide... Hope you come right, good luck...