brianemsu2
08-07-2003, 07:47 AM
I am curious about the normal settings for global illum in a scene. It seems that I have read that to get really good quality you would need to set the photon emission to 1,000,000 photons. This seems like a lot of photons since the default setting is around 10,000.
Also I have read that you would need to up the 'Global Illum Accuracy' setting to achieve a more realistic rendering.
Then you have the 'Global Illum Radius'. I have not read a lot of information on this setting so I have just been playing around with it.
The problem I am having is that I can't seem to get a soft realistic render with what seems to be extreme settings.
This first image:
Photons: 1,000,000
Accuracy: 10,000
Radius: 1.5
http://www2.msstate.edu/~bee2/pics/GI_box3.jpg
second image:
Photons: 1,000,000
Accuracy: 10,000
Radius: 1.25
http://www2.msstate.edu/~bee2/pics/GI_box2.jpg
third image:
Photons: 1,500,000
Accuracy: 10,000
Radius: 1.15
http://www2.msstate.edu/~bee2/pics/GI_box1.jpg
It seems that when the radius goes up, the shadows underneath the spheres disappear but the splotchy lighting decreases.
When the radius goes down to around 1, the shadows look a lot better but the walls get splotchy.
This is why I increased the photon number up to 1,500,000 but I am getting longer and longer renders for a relatively simple scene. I am using a PowerMac (Dual 1 Gig processors) with OS X 10.2.6 and Maya 5. The renders are getting close 5 minutes.
I would hate to see how long it would take to actually get a realistic render of a complex scene if a few NURBS planes and spheres breaks the bank.
Could someone fill me in on what my problem is. Maybe I am doing something wrong here. Oh yeah, and I have the 'Physical' button checked in the point light attributes settings also. This seemed to make the lighting darker but more accurate. Thanks for any help.
-B
Also I have read that you would need to up the 'Global Illum Accuracy' setting to achieve a more realistic rendering.
Then you have the 'Global Illum Radius'. I have not read a lot of information on this setting so I have just been playing around with it.
The problem I am having is that I can't seem to get a soft realistic render with what seems to be extreme settings.
This first image:
Photons: 1,000,000
Accuracy: 10,000
Radius: 1.5
http://www2.msstate.edu/~bee2/pics/GI_box3.jpg
second image:
Photons: 1,000,000
Accuracy: 10,000
Radius: 1.25
http://www2.msstate.edu/~bee2/pics/GI_box2.jpg
third image:
Photons: 1,500,000
Accuracy: 10,000
Radius: 1.15
http://www2.msstate.edu/~bee2/pics/GI_box1.jpg
It seems that when the radius goes up, the shadows underneath the spheres disappear but the splotchy lighting decreases.
When the radius goes down to around 1, the shadows look a lot better but the walls get splotchy.
This is why I increased the photon number up to 1,500,000 but I am getting longer and longer renders for a relatively simple scene. I am using a PowerMac (Dual 1 Gig processors) with OS X 10.2.6 and Maya 5. The renders are getting close 5 minutes.
I would hate to see how long it would take to actually get a realistic render of a complex scene if a few NURBS planes and spheres breaks the bank.
Could someone fill me in on what my problem is. Maybe I am doing something wrong here. Oh yeah, and I have the 'Physical' button checked in the point light attributes settings also. This seemed to make the lighting darker but more accurate. Thanks for any help.
-B