Thank, that got it. I had to specify it like this to get it working the way
i expected, where the middle of the image is the horizon, the top is
looking straight up and the bottom is looking straight down.

camera {
  spherical
  location <1,1,8>      // position
  look_at  <0,0,8>      // view
   sky       <    0.00000,     0.00000,     1.00000>
   up        <        0.0,        1,         0.0>
  angle 360             // horizontal degrees
}

kurtz le pirate <kur### [at] yahoofr> wrote:

> >>JM
>
> a beginning of answer :
>   camera {
>     spherical
>     location <0, 0, 0>
>     right -x
>     angle 360, 180
>     look_at <...>
>     }
>
>   then set the size of the output image to 1/2 -> +W1024 +H512
>
>
>   hope this help!
>   klp

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