"WhiteGandalf" <zus### [at] liberoit> wrote in message
news:20020501144914176+0200@news.povray.org...
> Hello,
>

<snip>

Hi,

You're talking about transluscent surfaces. There has never been an ideal way to
implement this in POV (any version).

IIRC the best results have been obtained by using a scattering media.

Playing with this looks hopeful...

camera
{
  location  <0.0, 0.5, -4.0>
  look_at   <0.0, 0.0,  0.0>
}

light_source
{
  0
  color 1
  translate z*2
  fade_power 2
  fade_distance 0.5
}

box{
  <-1,-1,-0.1>,<1,1,0.1>
  texture{
    pigment{rgbt 1}
  }
  interior{media{scattering{2, 20 extinction 0.25}}}
  hollow on
}

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