lampshade with dirt and emission - how please?

[miohn]

Hi,

cannot find that post again.

Somebody made a lampshade-material where (via dirt)
the light/emission is less in the corners and mor in the middle.

I cannot get this done!

Any help please?

thanks
Mike

[miohn]

o.k. got it!

My emission strenght was to high.

MIke