Article and video on post-processing effects

This goes into quite a lot of detail on how post-processing effects are set up in our engine, and has some interesting information on the technical background of these effects:

Article:
http://www.leadwerks.com/files/Tutorials/CPP/Post-Processing_Effects.pdf

Video:
http://www.leadwerks.com/files/Tutorials/CPP/Post-Processing_Effects.wmv