It's very simple to create a similar effect in post. For example blur the image where the blur radius is high at the top and bottom of the image and zero at th

It's very simple to create a similar effect in post. For example blur the image where the blur radius is high at the top and bottom of the image and zero at the center. Of course this does not take depth into account but simulated the effect well. There are a lot of tutorials about this subject.