Hi Eryk, Select the camera, then set the Blur amount -- try it first with a small amount, like 5%. When you set Blur, you'll see additional lines show up in the viewports. Fiddle with the focal length, and those lines will move closer or further from the camera. Align it so that your tree fits into the middle of the "block area" formed by the new camera lines -- this should make more sense when you're actually looking at it. When lines up, everything within the "block area" will be in focus, and everything outside it will be blurred by the 5% worth. Hope this helps. :)