Nick, thank you for explanation!
So what will be your suggestion to make scene for 2D platform game that use textures with alpha? What material should I use to have proper alpha from textures and depth of field? One of the textures that I use is here:
I can pre-blur texture in Photoshop, but that will be tricky to get proper DoF on each scene where I need about 5 layers in parallax (as background). So is there a way, how add blur effect to specific translucent material and change amount of it in realtime?
Thank you!