Hi,

I've been rendering some rolling spheres across the screen, but I'm noticing
that the spheres start to warp at the edges of my view. I've been playing with
the right function and other camera parameters, but I can't seem to get it
right.

This artifact appears almost like a stretching so the balls on the outside are
no longer perfectly spherical.

Has anyone seen this issue before? I'm thinking its something simple I'm not
doing.

Here's my camera and global setup:
_________________________________________________________
global_settings {ambient_light rgb< 1.5,1.5, 1.5>
}

camera {
  location  <0, 0, -12>
  direction 1.5*z
  up y
  right  x*image_width/image_height
  look_at   <0.0,0.0,0.0>
}

Here's one of my spheres:
_________________________________________________________
 object { GolfBall
  scale 0.7
  rotate <0, 0, -clock*a*180>
  translate <-5.5, 2.9, 0>
  translate <1,0,0>
          }
________________________________________________________

Is this possibly related to the scale of my objects/spheres?

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