#5 fractal.ray seems to render wrong

[Marcus Bürgel]

As far as I can remember the big sphere in the middle
of the fractal of spheres is really in the center.
The image shows that the big sphere is quite a bit
higher than that should be.

Either this is wanted and the scene is correct or
this a bug in the scene. Or finally it can also be a
bug in the raytracer itself.