You may have heard the agonizing screams of those learning YafRay. You may also have heard the sullen whispers speaking of YafRay's slow return from the netherworld. Whatever you may have heard or believe, YafRay is an integral part of Blender and still used by a great many people. Read on for the most comprehensive notes on YafRay features and use in the known universe!
Claus Andersen and Alvaro Luna have written up the most detailed release notes that you will likely see on YafRay. Irradience caching, DOF, fake SSS? Oh yeah, it's covered. Claus and Alvaro also explain how Blender parameters are translated into Yafray XML files, and which parameters are YafRay features that can be only accessed by XML editing. I'm sure after reading these notes you might want to take another look at YafRay if you're not currently using it, simply because of the features that you might not have known where there.