Okay, here is a test file. The sky renders with horizantal bands that are
subtle but definite, at least on my system.

-------------------------------------------------------

/*
//Test file to show banded graduations in background
*/
#include "colors.inc"
#include "textures.inc"


/*original camera */
camera {
	ultra_wide_angle 
	location < -0, -0.9, -8 >
	angle 60
	look_at < 0, 0.0, 0.0 >
}

// Create an infinite sphere around scene and allow any texture on it
sky_sphere
{
  pigment
  {
    gradient y
    color_map { [0.0 color rgb <0.0,0.0,0.3>] [1.0 color blue 0.5] }
  }
}

//groundfog
fog
{
  fog_type   2
  distance   15
  color  rgb <0.5, 0.3, 0.2> //pollution color
  fog_offset 0.1
  fog_alt    0.01
  turbulence 0.8
}

//regular fog
fog
{
  fog_type 1
  distance 2000
  color <.0, .0, .05>
}



// overhead light
light_source
{
 0*x 
  color red 1.0  green 1.0  blue 1.0  
  translate <100, 500, 100>
}


plane { <0, 1, 0>, -1//ground
  texture { Jade
    }
rotate <0,0,0> 
 }	

//the two little spheres
union {
blob {
	threshold 0.6
	sphere {<0,0,0> 1, 1 scale <15,15,15> rotate <0,0,0> translate
<-15,0,-3>}
	sphere {<0,0,0> 1, 1 scale <10,10,10> rotate <0,0,0> translate
<16,0,-4>}
      texture {Blood_Marble}
     rotate <0,45,0>
     scale <.02, .02, .02,>
     translate <2, -.9, 8>
  }
}

--------------------------------------------------------

Thanks for looking at this. I'm new at ray-tracing (obviously), but
although the learning curve is steep, it sure is fun!

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In article <371221d1.0@news.povray.org> , 
REM### [at] teleportcom  wrote:

> Okay, here is a test file. The sky renders with horizantal bands that are
> subtle but definite, at least on my system.

Hmm, I cannot see anything unusual on my system. Have you tried to view they
saved image in another program?
Anyway, it would be great if you could send a (small) image in Pict format
of the problem to either my account or the mac-team account. It would also
be great if you could attach the original scene file (compress it with
StuffIt or ZipIt so the resource fork and the preferences you set are
preserved) and just in case fill out the bug report form you find the the
Documentation folder.


    Thorsten


____________________________________________________
Thorsten Froehlich
e-mail: mac### [at] povrayorg

I am a member of the POV-Ray Team.
Visit POV-Ray on the web: http://mac.povray.org

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