Lighting an Exterior Daylight Scene - Photographic Rendering with V-Ray for SketchUp - page 137

Ozone on the other hand (which only affects the color of light from the sun), when
set at its minimum value of 0, produces sunlight that has more of a yellow aspect to
the color, while its largest setting of 1.0 takes us in the opposite direction and pushes
the sunlight towards the blue part of the spectrum.
To enhance the idea of a late afternoon on a sunny summer's day for the setting
here, I am going to make the sunlight look a little warmer by performing the following
steps:
1. Open up the V-Ray option editor (if it isn't already), and in the Indirect illu-
mination rollout, put a check in the On button.