V-Ray for Rhino Manual - Rum

Add Lights
We didn't add any light to the scene so far, however, the render turned out pretty good already.
The shadow is kind of smooth because we used GI as the only light source. So we still need to add
more lights in order to have more depth to the image.
01. Right click and hold on the Spot Light icon from toolbar above. A secondary toolbar will pop
out, select the fourth one from the left (Create Rectangular Light).
02. From Top view, follow the steps below to
create Rectangular Light in the scene.
03. Start from bottom left and make your second
left click to the bottom right of the scene.
04. To complete creating the light, make your
third left click on the top left of the scene,
approximately the same distance as between first
and second spots
05. Select this Rectangular light you just created.
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V-Ray for Rhino