Ray shadows

The ray_shadows setting determines whether or not PyMOL will ray trace shadows. This is also related to the ray_shadow setting.

# turn on ray traced shadows
set ray_shadows, on
set ray_shadows, 1
 
# turn off ray traced shadows
set ray_shadows, off
set ray_shadows, 0

To illustrate the difference, look at the two following images:

Ray_shadow turned off. Click on the image to see the full detail.

Ray_shadow turned on. Click on the image to see the full detail.