hoseinasadi Posted March 31, 2015 Share Posted March 31, 2015 I have no idea why the area around the vray light render so blotchy? the sampler for vray light and material reflection is set to 64. blow Ive attached my render setting: Link to comment Share on other sites More sharing options...
Corey Beaulieu Posted March 31, 2015 Share Posted March 31, 2015 I would have expected to see the blotchy marks everywhere unless you are rendering a region, but I would try rendering with "Show Samples" unchecked in the Irradiance Rollout. Link to comment Share on other sites More sharing options...
hoseinasadi Posted March 31, 2015 Author Share Posted March 31, 2015 I would have expected to see the blotchy marks everywhere unless you are rendering a region, but I would try rendering with "Show Samples" unchecked in the Irradiance Rollout. Yup that was the issue. But why is it so patchy around the light when show samples is ticked? Link to comment Share on other sites More sharing options...
Corey Beaulieu Posted March 31, 2015 Share Posted March 31, 2015 My guess would be because here you have your most simplified geometry and Vray is using fewer samples here so they show up. In the other areas, you are likely using more samples and the blurring between them is giving you a kind of smoothness that is more acceptable. Just a thought Link to comment Share on other sites More sharing options...
hoseinasadi Posted March 31, 2015 Author Share Posted March 31, 2015 (edited) My guess would be because here you have your most simplified geometry and Vray is using fewer samples here so they show up. In the other areas, you are likely using more samples and the blurring between them is giving you a kind of smoothness that is more acceptable. Just a thought Thanks a bunch dude. One more thing, areas around the light and those close to the light are pretty much noisy and I dont know whats causing it. Is there any tweaking to make them gone? P.S: IR : Hsph sub:50, Interp Samples:40 LC: Subd: 1400, Prefilter:20 DMC: Adaptive amount: 0.85, noise: 0.005 Edited March 31, 2015 by hoseinasadi Link to comment Share on other sites More sharing options...
Corey Beaulieu Posted March 31, 2015 Share Posted March 31, 2015 Seems like a low light condition. Try using a higher interpolation on your IRR Samples and definitely use a higher Light Cache value. In the end it will likely need to get more GI. Link to comment Share on other sites More sharing options...
hoseinasadi Posted March 31, 2015 Author Share Posted March 31, 2015 Seems like a low light condition. Try using a higher interpolation on your IRR Samples and definitely use a higher Light Cache value. In the end it will likely need to get more GI. Image above was rendering with following settings: IR : Hsph sub:50, Interp Samples:40 LC: Subd: 1400, Prefilter:20 DMC: Adaptive amount: 0.85, noise: 0.005 By more GI , you mean I should be adding more lights? Link to comment Share on other sites More sharing options...
Corey Beaulieu Posted March 31, 2015 Share Posted March 31, 2015 Yeah, sorry. More illumination I should have said. A photographer might use a bounce card to bring a soft light into the shadow areas which will help Vray better determine the pixels in that area. Link to comment Share on other sites More sharing options...
hoseinasadi Posted March 31, 2015 Author Share Posted March 31, 2015 Yeah, sorry. More illumination I should have said. A photographer might use a bounce card to bring a soft light into the shadow areas which will help Vray better determine the pixels in that area. I used an omni light behind the camera and set its far attenuation to cover up the whole scene. the noise still persists tho. Link to comment Share on other sites More sharing options...
Francisco Penaloza Posted March 31, 2015 Share Posted March 31, 2015 I think it can be glossy samples or shadow samples(from the light). Everything is so dark that is hard to tell, when darker your image or less lights you have, your GI will have to work more, this mean you will need eight setting for GI. I would put a big plane light behind the camera, only affecting diffuse, and try to get a even soft illumination, then place your accents light or key lights, and in Post make the image darker. Otherwise you'll need higher setting in your GI and samples and this only will give you a very slow render. Link to comment Share on other sites More sharing options...
hoseinasadi Posted March 31, 2015 Author Share Posted March 31, 2015 I think it can be glossy samples or shadow samples(from the light). Everything is so dark that is hard to tell, when darker your image or less lights you have, your GI will have to work more, this mean you will need eight setting for GI. I would put a big plane light behind the camera, only affecting diffuse, and try to get a even soft illumination, then place your accents light or key lights, and in Post make the image darker. Otherwise you'll need higher setting in your GI and samples and this only will give you a very slow render. Thanks for the heads up. What exactly do you mean by 8 setting for GI tho? Link to comment Share on other sites More sharing options...
Francisco Penaloza Posted March 31, 2015 Share Posted March 31, 2015 Ha ha that was a typo sorry, I meant higher values. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now