The following source gives a brighter image when focal blur is turned
on...

///////////////////////////////// begin
#version 3.1;

#include "colors.inc"

global_settings
{
  assumed_gamma 1.0
}

// ----------------------------------------
camera
{
  location  <0.0, 0.5, -4.0>
  direction 1.5*z
  right     4/3*x
  look_at   <0.0, 0.0,  0.0>
	// uncommenting the next three lines brightens up the image
  /*aperture 0.05
  focal_point 0.0 
  blur_samples 40*/
}

sky_sphere
{
  pigment
  {
    gradient y
    color_map { [0.0 color blue 0.6] [1.0 color rgb 1] }
  }
}

light_source
{
  0*x // light's position (translated below)
  color red 1.0  green 1.0  blue 1.0  // light's color
  translate <-30, 30, -30>
}

// ----------------------------------------
plane { y, -1 pigment {color rgb <0.7,0.5,0.3>}}

//=========================================
// macro mAlign
//-----------------------------------------
// translate vers P2-P1 si on veut positionner l'objet en P2
#macro mAlign(P1,P2)
#local yV1=vnormalize(P2-P1);
#local xV1=vnormalize(vcross(yV1,z));
#local zV1=vcross(xV1,yV1);
matrix
<xV1.x,xV1.y,xV1.z,yV1.x,yV1.y,yV1.z,zV1.x,zV1.y,zV1.z,P1.x,P1.y,P1.z>
#end

cylinder {
  0, y, 1
  pigment { color Red }
  mAlign (<0, 0, 0>, <1, 1, 1>)
}

//box {
//  -<1000, 1000, 1000>, <1000, 0, 1000>
plane {
  y, 0
  texture {
    pigment {
      gradient x
      pigment_map {
        [ 0.9 color rgbf 0 transmit 1 ]
        [ 0.9 color Blue ]
      }
    }
  }
  texture {
    pigment {
      gradient z
      color_map {
        [ 0.9 color rgbf 0 transmit 1 ]
        [ 0.9 color Blue ]
      }
    }
  }
  translate 0.45*y
}

/*fog
{
  fog_type   2
  distance   10
  color      rgb 0.6 // gray
  fog_offset 0.1
  fog_alt    0.2
  turbulence 0.8
} */

/////////////////////////////////// end

		Jerome
-- 
*******************************

* they'll tell you what can't * mailto:ber### [at] inamecom
* be done and why...          * http://www.enst.fr/~jberger
* Then do it.                 *
*******************************

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