Tweet
Hi all,
Very new to V-Ray. I have a scene that is just panning a camera past a building and as the angle changes, the lighting gets very splotchy. Dark spots appear as I pass (incremental add to current map on a new fresh map with irradiance set to very low).
On most angles the lighting looks good. I desire the look of the "very low" setting because shadows are harder. I just want the "spotting" to go away. An example of the spotting is this 3-frame example of a camera panning maybe 2 feet to the side per picture while the angle of the camera to the building shifts (and thus lighting):
When I render using "Very High", the spots go away, but it basically increases render time by about 500x. Is there some setting I should consider other than cranking it up to Very High irradiance calculations? Even "High" and "Medium" (or animation settings of either) produce small amounts of splotches, "Very High" is the only setting that doesn't. Is there some other setting I should consider?
I did up the sample size settings (I think default was 25/10?) to 100/40 and on very low light, that seemed to feather out the spots, but they were still very obvious. Right now on 100/40 with "Very High" it averages about 5 minutes per frame on a dual quad (x5365) xeon system with 16gb ram. So for a 1500 frame animation like mine, you're talkin 125 hours of rendering (+/- 10 hours from random frame times), or about 5 days of render time. LOL!
Any suggestions to get lighting smooth without costing this much render time would be greatly appreciated!
FWIW, here's a small sample of the low quality building scene I'm trying to pan, might be easier than the screenshots above:
example.wmv (7mb)
edit:
I don't like the extra whiter lighting lines, but here's a quick example of the same thing with "Very High" settings. The splotching goes away, but also the simple look of it does too. The vertical lines are actual geometry and it looks very flat in "Very Low" settings, and I'm fine with that, but gets kinda weird and blurry in "Very High", but at least the dark spots go away. Even spots appear in "High" or "High Animation", they only ever go away with "Very High":
exampleveryhigh.wmv (9MB WMV)
Obviously I'm not going for hollywood with the google image overhanging door texture I quickly photoshopped and slapped on the building haha. I just want something simple! Not ultra realistic or expensive to render, just as simple and not "bad" and "dark spot/splotchy".. Something like this, but faster rendering than 5 days worth of render time.
Very new to V-Ray. I have a scene that is just panning a camera past a building and as the angle changes, the lighting gets very splotchy. Dark spots appear as I pass (incremental add to current map on a new fresh map with irradiance set to very low).
On most angles the lighting looks good. I desire the look of the "very low" setting because shadows are harder. I just want the "spotting" to go away. An example of the spotting is this 3-frame example of a camera panning maybe 2 feet to the side per picture while the angle of the camera to the building shifts (and thus lighting):
When I render using "Very High", the spots go away, but it basically increases render time by about 500x. Is there some setting I should consider other than cranking it up to Very High irradiance calculations? Even "High" and "Medium" (or animation settings of either) produce small amounts of splotches, "Very High" is the only setting that doesn't. Is there some other setting I should consider?
I did up the sample size settings (I think default was 25/10?) to 100/40 and on very low light, that seemed to feather out the spots, but they were still very obvious. Right now on 100/40 with "Very High" it averages about 5 minutes per frame on a dual quad (x5365) xeon system with 16gb ram. So for a 1500 frame animation like mine, you're talkin 125 hours of rendering (+/- 10 hours from random frame times), or about 5 days of render time. LOL!
Any suggestions to get lighting smooth without costing this much render time would be greatly appreciated!
FWIW, here's a small sample of the low quality building scene I'm trying to pan, might be easier than the screenshots above:
example.wmv (7mb)
edit:
I don't like the extra whiter lighting lines, but here's a quick example of the same thing with "Very High" settings. The splotching goes away, but also the simple look of it does too. The vertical lines are actual geometry and it looks very flat in "Very Low" settings, and I'm fine with that, but gets kinda weird and blurry in "Very High", but at least the dark spots go away. Even spots appear in "High" or "High Animation", they only ever go away with "Very High":
exampleveryhigh.wmv (9MB WMV)
Obviously I'm not going for hollywood with the google image overhanging door texture I quickly photoshopped and slapped on the building haha. I just want something simple! Not ultra realistic or expensive to render, just as simple and not "bad" and "dark spot/splotchy".. Something like this, but faster rendering than 5 days worth of render time.
. In looking at the tutorial, I'm trying to get my sample size correct and I guess my units are different. Well, he's on a scene that's inside and I'm using an exterior scene. So I need my samples very small I guess. He sets his sample size to 2.0, I set mine to 0.002, which is the smallest possible. He says I need to increase the subdivs to something that looks good but warns that it takes lots of RAM to calculate a lot of subdivs. So I try tripling what he's using for his small inside scene for my large outside scene, and I keep crashing while calculating around 5.xGB ram usage. 
Comment