In the picture the sun makes a diffuse shadow on the interior wall of the poolhouse. I want this to be a sharp shadow (as would be the case in real life, with a full sun). Don't know if and how I have to change the wall material and/or the lighting (or whatever).

(the material of the wall is shown on the right panel, as "concrete")

enter image description here


1 Answer 1


A sun lamp with size 0 will give you a very sharp shadow:

enter image description here

As you increase the lamp's size it will give you much softer shadows.

enter image description here

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related: Meaning of Sun Lamp Size?

  • $\begingroup$ In blender 2.8 Sun size has become "strength" $\endgroup$ Commented Jul 10, 2020 at 5:03
  • 1
    $\begingroup$ No, strength is how bright it is. $\endgroup$
    – stackers
    Commented Sep 27, 2020 at 17:43
  • 2
    $\begingroup$ In Blender 2.9, set Angle to 0°. $\endgroup$
    – dirk
    Commented Oct 27, 2020 at 10:56

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