The show is more of an insight on the life of the Chief Photographer in the White House. Nothing technical whatsoever on his gears, etc.
It's an interesting show on the life behind the "invisible" man who follows the most powerful man in the world everywhere he goes. He is required to take pictures of every moment of the President whenever he is at meeting, shaking hands with the public, traveling on Air Force One, etc. Every photo that he has taken cannot be deleted as by constitution, every pictorial record of the President will go into the National Archives and also to the future President's museum.
I personally find it funny and amused that whenever the 20+ motorcade stops at a location, he will be jumping out of the car and run towards the President's limousine "The Beast". The Secret Service will not stop him or pin him down. I guess they got to know him and let him do his job.