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Material Question

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johnar:


 Please tell me, what is this black line that always appears on my spheres?
 It's there whether default material, any lightish colour, and any texture.
  Man its annoying...

Claude:
johnar

I think there's 2 lights on opposite side of the sphere.The rays
are unable to reach that zone.
diffuse factor = 0
ambient factor = 1
would make it disappear obviously,but is it better ?

johnar:
Hi Claude. Thanks for your reply.
 I'm pretty certain its not a lighting issue. I can rotate the sphere, scene or object mode, and the line rotates with it, so that cant be lighting, can it?.
 In the image below, you can see where the faces are a slightly darker colour where the line appears. (the cursor is sitting on one of the faces)


 Its got me stumped.

Raxx:
As Claude said, it's the result of the default lighting setup, which is entirely static. Rotating the view around won't change the positioning of the light sources, but if you rotate around a sphere then I guess it's easy for it to seem as if the lighting is rotating with it :) The line is just the dark space between two light sources. If you shine two lights on a ball from opposite directions, you'll get a similar effect.

johnar:
Thank you Raxx for seconding Claudes opinion. Understood.
 Deep down i was thinking my old graphics card(s) were going. lol
 Whew. relief  Thanks to you both.

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