'The Situation Room', photo by Pete Souza. President Barack Obama and Vice President Joe Biden, along with members of the national security team, receive an update on the mission against Osama bin Laden in the Situation Room of the White House, May 1, 2011. 

There's no photographer in the world with a job quite like Pete Souza's. As Official White House photographer, Souza has to be ready to move at a moment's notice. Familiarity with and trust in his gear is essential. So what's in his photo bag? Surprisingly little, which actually makes a lot of sense.

Souza uses two Canon EOS 5D Mark III bodies. Introduced in 2012, it's a full-frame 22MP DSLR that earned a gold award for its excellent image quality and versatility when we reviewed it.

Popular Science recently got a look at Souza's kit and found two Canon 5D Mark III bodies and a trio of L-series lenses: a 135mm F2, 35mm F1.4 and a 24-70mm F2.8 II. Souza also keeps it simple when he isn't shooting visiting dignitaries and state dinners: he uses a Fujifilm X100S in his downtime. 

You can keep up with Souza and the POTUS on Flickr and Instagram