How to use IES lights in blender for octane/cycles + free IES files - YouTube
Blender Guru - Did you know that Cycles now allows for IES lighting? Download the add-on by Lockal here: http://blenderartists.org/forum/showthread.php?276063-IES-Lamps-to-Cycles It's great for realistic architectural lighting! | Facebook
Blender Lighting Trick in for Better Renders: IES Lighting Tutorial (Quick Version) - YouTube
Daily Blender Tip 337: How to use IES lights - BlenderNation
Download over 90,000 free IES lighting files from IES Library - BlenderNation
Lantern rendered using an IES texture in Cycles, and caustics in LuxRender. : r/blender