On the leaf image: “The reason I like this so much is the obvious layering. The depth of field created with the iPhone here very clearly shows you what the focal point is, and represents a fantastic example of how good the software is at completely isolating the foreground, leaving the background blurry. A perfect example of computational depth of field.” — Peter McKinnon

Is this correct? From what I've shot in macro on my DSLR, the blur is natural because the focus plane is so thin. I realize the phone has a much smaller sensor, but is the blur in macro mode computational? I thought that effect was only applied in portrait mode shots.