Without having had a look at the sources (neither MegaPOV's
nor your scene file) could it be that

a) you have a point_at statement in your area light?

 and

b) the area light is always oriented perpendicular to
   that point_at vector?


Or are the two dimensions of the area light very different,
and orient rotates the rectangle in an unexpected manner
(as you suspect in your last question) ?

-Hans-

Rune wrote:
> 
> What exactly does orient do to area_lights? According to the MegaPov docs it
> makes sure the area_light plane is perpendicular to the point which is being
> tested for a shadow.
> 
> However, in the image posted to p.b.i I would have expected the shadow of
> the object to the right to be blurred evenly in all directions like the
> object at the bottom, but that isn't the case. Why not?
> 
> Also, when using area_lights where one dimension is bigger than the other
> (area_light is rectangular) how is the rectangle oriented, and can it be
> controlled in some way?
> 
> Rune
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