You can use Photoshop to acheive it. It is a bit time consuming, but it works. It certainly is cheap, in that it works with any camera or lens. I shot this with a Canon Pro 1 at 200mm. Due to the small sensor size, the entire photo was in focus. I wanted only the couple and the children in the foreground to pop out of the cluttered background, so I defined the area in Photoshop and applied a lens blur filter. This worked really well, and printed great at 16x20. The couple was thrilled with the print.