It’s called the Sun Run. The Vancouver Sun newspaper organises a 10k run every end of spring. People come by the 10 of thousands and some people like this guy and me also come not for the run or the walk portion but for the photo opportunities.
He’s using his IPad and he seems to be happy with what he sees on his screen.
Photographer having fun taking photos with his iPad
Camera: Canon 7D ISO 100 and 1/200
Lens: Canon 70-200mm f/4 @70mm and f/8.0
Processed with Darktable 2.2.1: http://www.darktable.org/