Thanks Gaeius
In Photoshop the Blur focal distance will help you focus the object that you based on the distance that PS is reading from the depth pass. So as long as you push further the far he will focus. The as i said before is where you control the amount of blur but sometimes you'll want to pussh it up just a litle bit on the blur so that doesn't get so undefined and can't do it in the lens blur menu. then after doing the blur, duplicate that blur layer, and youl'll see that the blur got a litle stronger, now start reducing the opacitty of the top one, seeing real time the blur getting stronger or weaker.
Anyone want to share more tips?:)
P.S: there 2 more images below showing the blur focal distance afecting the image using the depth pass (first focusing near objects- car and tree; 2nd focusing, midle objects - house; and 3rd focusing far away objects - back trees).
House 4 DOF1.jpg
House 4 DOF2.jpg
House 4 DOF3.jpg