I'm thinking they've used similar methods, as the photo shown in the bottom . #GodblessPhotoshop
Concerning the looks of the photo, in all seriousness, the photographer has most likely used a wide angle, and then chosen, in relations to using a wide angle, to walk far away. That's why the gap looks so damn big. It's "magnified" being close to the lens, but as mentioned, JJ is most likely leaping of and landing somewhere around where you see the light from the flashes, which is pretty damn far from the photographer.
But what a coincidence that Pops happened to be there btw. Don't get why they choose to edit him out of the original. :/