Scene: Need help with windtunnel scene

[Jesse-Irvin]

Unless you are using area lights it's a final gathering issue. Go into your render options and under the final gathering tab you'll need to adjust the accuracy settings and min max radius... you may want to play around with those a bit... An accuracy of 1000 or maybe 2000 may fix the problem but adjusting the radius may allow you to keep a lower accuracy.

[Waters]

I am using area lights. I thought that if I was using area lights I wouldnt need to have raytraced shadows on, but when I click raytrace shadows off, my scene becomes blown out ( bright/over lit ), so I have them both clicked on. I'll try upping my final gathering settings.

[Jesse-Irvin]

What you did when you turned the ratrcaed shadows off was, well you turned the shadows off, with no cast shadows the light simply went through the objects creating highight on all surfaces facing the light... But thats not the real issue. Area lights can cause the grainyness you are seeing if your sample setting is too low. Open your lights up and increase the samples under the area light tab. You'll need to tweak it... 7 or 8 is usually a good number though... if that doesn't work, increase your accuracy for final gathering as I suggested origionally.

[Waters]

Hey, thanks for the tip. I had tried upping the sampling settings on the area lights, but I just hadn't set them high enough. 8 worked great.

[Waters]

Here is the result of the tip:

http://www.rit.edu/~mmw4110/wtunnel010.jpg

[Waters]

Hey, I could use some more help. In this render you can see some beams that come to rest on a white box ( which does not have a reflective shader ) , they are not intersecting. There are white areas on the box that look like reflections ( but arent ) and I would like to know what they are and how to get rid of them.
http://www.rit.edu/~mmw4110/wtunnel011.jpg

[MaxParticle]

Aren't the white areas on top of the box just gaps between the shadows created by the thin beams resting on the box?

[Waters]

They looked too thin and bright to me, but you are probably right. Also, you can see in the second render I posted, on the right, half the way up the wall, there is a bright area that looks out of place. I cannot see where this area would be getting extra light from.

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.