Mike Horvath <mik### [at] gmailcom> wrote:
> On 8/7/2018 5:11 PM, Le_Forgeron wrote:
> > What about the ancestor of the sky_sphere: a real sphere (0,1) scaled
> > large enough.
> >
> > With no_image, later.
> >
>
> Okay, here is my new sphere:
>
>
> //------------------------------------------------------------------------------
> sphere
> {
>  0, 1
>  pigment
>  {
>   gradient y
>   color_map
>   {
>    [0/4 color srgb (<0.6,0.7,1.0>+1)/2]
>    [3/4 color srgb (<0.0,0.1,0.8>+1)/2]
>   }
>  }
>  finish
>  {
>   diffuse  0
>   ambient  0
>   emission 1
>   reflection 0
>  }
>  scale 2048*16
>  no_image
> }
> //------------------------------------------------------------------------------
>
>
> It works fine normally, *but* when I add focal blur, I can still see
> stuff in the background. E.g.
>
>
> //------------------------------------------------------------------------------
> camera
> {
>  orthographic
>  location  -z * 4
>  direction  +z * 4
>  up    +y * 2
>  right   +x * 2 * image_width/image_height
>  focal_point  <0,0,0>
>  aperture  1/16
>  blur_samples 512
>  confidence  15/16
>  variance  1/256
> }
> //------------------------------------------------------------------------------
>
>
> Is this a bug? Is there a workaround?
>
>
> Mike

Just a guess but would hollow in the sky sphere help.

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