I was just starting to use atmosphere in POV-Ray 3.02 and hesitated to
switch to the 3.1 beta for a while. But having made that switch I want
to render a scene I had been working on which uses an atmosphere to
simulate a dusty room with the early morning sun shining in a window. 

I was beginning to get somewhere in 3.02 but I wanted to finish it in
3.1. However I am having a great deal of trouble converting atmosphere
to media. I am getting nothing in the image at all now. My atmosphere
for the 3.02 scene was:

atmosphere {
  type 5    // Henyey-Greenstein
  eccentricity 0.3
  distance     40.0
  color <0.8,0.8,1.0,0.0,1.0>
  scattering   0.2
  samples      20
  jitter       0.2
  aa_threshold 0.1
  aa_level     8
}

There is a spotlight about 400 units from the room, which is about 20
units square, shining through a window with glass.

Could anyone tell me what settings I should use in media to get a
similar result? I have been through the documentation and have looked at
the example scenes, but I cannot seem to grasp what to do.

Thanks for your time.

Mark

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