I need to simulate an effect similar to what http://tiltshiftmaker.com/ creates. As a small step towards accomplishing it i need to say only the top and bottom 40% of the screen will be blurred, while keeping the center 20% crystal clear.
I thought maybe i could have a plane that blurs whats behind it, but i couldnt find out how to do that either, so any help at all with this issue would be great