Sorry, I should've been more clear - I'm actually just using a real sphere 
with various lighting effecets to light my scene - so whilst it is 
technically a sky sphere, it's not done the way POV usually would - I'm 
trying to get a natural lighting effect (as per a seminar I saw by Paul 
Debevec). Results have been quite good (I've posted a vid in p.b.a if you're 
interested)

The Sky declaration is:

 union{
  sphere{0,5
   hollow no_shadow
   texture{
    pigment{
     function{fp(x,y,z).gray}
     poly_wave light_exponent
     color_map{
     [0.0 rgb 0]
     [1.0 rgb light_ambient]
     }
    }
  finish { ambient light_ambient diffuse 0 }
   }
  }
  sphere{0,4.999
   hollow no_shadow
   texture{
    pigment{p_image_filtered}
  finish { ambient light_ambient diffuse 0 }
   }
  }
 }

(I hasten to add that this is not my code - I grabbed it online. Am not 100% 
sure where from but will find it if anyone wants to know)

Thanks for any help you can give Stephen :)

-Simon

"Stephen" <mcavoysATaolDOTcom@> wrote in message 
news:5iaj539kp36u1urgbqo3th2pgbv7lf2u5a@4ax.com...
> On Sun, 27 May 2007 14:41:24 +0100, "Simon" <povray@*NOSPAM*SOWare.co.uk> 
> wrote:
>
>>It's working (ish) with the objects. I have a sky sphere and want to fade
>>that too....
>
> I've never obtained satisfactory results when trying to fade an object. So 
> I
> might not be the best person to help you further. :-(
> But I've just checked this and it looks like Pov can only use one 
> sky_sphere.
> The last in the scene is the one it uses.
>
> Regards
> Stephen

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