At first I thought this had to do with the "yon" camera parameter, but that only applies to preview. I think you'll have to light that sphere; probably the easiest way is creating a spot light, parent it to the main camera, set xTran, yTran, zTran to zero, set xRot and zRot to zero, and set yRot to 180. Disable shadows, and make sure your Angle Start and Angle End are high (I'd recommend 120 and 150 for starters). Keep Distance Start and Distance End at zero. Hope this helps. Steven.

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