IES lights are widely used in architectural visualizations, from interior to exterior renderings. These are data files that contain real world information on the intensity distribution of a given light. You can download many IES files from light manufactures websites such as Lithonia and ERCO.
- Downloading IES data file.
- Using the IES Viewer to view the file.
- Creating IES light in 3ds max.
Links in the video:
Lithonia : http://www.lithonia.com
ERCO : http://erco.com
IES Viewer: http://www.photometricviewer.com