Example IES profiles can be downloaded here (paths to the IES files will need to be edited).
You can find a description of common light parameters on the lights page. Additional attributes are described below.
Allows you to choose an IES light profile that defines the distribution of light.
Allows you to define a target object the light always points toward.
Many IES files originate from various lighting manufacturers, some of whom put extra text at the beginning of their IES files. If you are experiencing difficulties rendering a particular IES file, try opening the IES file in a text editor and deleting the header text from the top of the file. The file should typically start with
TILT=NONE and if it doesn't, that may be the culprit.