2009

IES Sun Light (Photometric)
Create panel > Systems > Create a Daylight system in your scene. > Modify
panel > Daylight Parameters rollout > Sunlight > Choose IES Sun.
IES Sun is a physically-based light object that simulates sunlight on page 8140.
When used in conjunction with a
daylight system on page 5139, its values are
set automatically based on geographic location, time, and date. (IES stands
for Illuminating Engineering Society; see IES Standard File Format on page
5034.)
Outdoor scene illuminated by the IES Sun light
The mental ray renderer gives physically accurate results for IES Sun, and
renderings that use it will appear similar to renderings done with the default
5154 | Chapter 18 Lights and Cameras