Yeah, longer lenses offer a great depth of field for focus. Some of my best images from college are from a lens that would completely blur the background as the focus range was so small. Sometimes this squishes the subject, forcing it into 2d (well, less transparent 2d) As I was scrolling down new posts, this image really stuck out at me. She did an awesome job with the background, as to me, I feel this almost mutes the colors of the subject. The light being being the subject and above, along with the focus brings a nice glow to the subject too. Absolutely beautiful image, great job! :)