Quote from: Tangled-Universe on August 14, 2009, 11:09:40 AM
It's a cool scene but there's something odd regarding scales and depth.
The planes which intersect the clouds look huge because the clouds appear to be at a much lower altitude. The planes seem to be closer to the camera but still intersect the clouds which is conflicting.
The render camera is at an altitude of 6300.
The near altocumulus clouds (which the near / topmost plane is flying into) are at an altitude of 6000 with a depth of 500. I believe this means their altitude extremities are 6250 and 5750.
The main body of altocumulus cloud is also at an altitude of 6000 but with a depth of 3500. So they will have a high point of 7750 and a low point of 4250.
The near / topmost plane is also at an altitude of 6000 (300 below the height of the render camera). So it is big because it is relatively near the camera.
The near clouds (with the near plane flying into them) are not, as you say "at a much lower altitude". The main body of clouds (which have been shoved away from the camera with a distance shader) because of their far greater depth may appear to be lower.
The other planes (a pop) are at an altitude of 5000. Below the near alto clouds, but still short of the main body of deeper alto clouds.
Because I am seeing the near clouds and plane as near the camera (which they are) I am not perceiving the scale problem you seem to be seeing.
John