Royal photographer Chris Jackson is touching on how taking photographs of the Queen's family, has helped him gauge individual personalities of members of the royal clan.
"The thing I love about royal photography is the depth with which you get to know your subjects," Jackson tells PEOPLE in an exclusive interview. "Celebrity photography is one thing — you are photographing a much bigger roster. With royals you have the opportunity to build up an in-depth knowledge of their personalities."
Speaking specifically about Prince Harry, Jackson praised his energy during the appearances.
"Harry has a real energy to his engagements," says Jackson.
He adds that Harry brings "an element of unpredictability which has always been special. One example of that was when he joined in a charity run in Rio de Janeiro and he ended up finishing the race with a face mask on. You literally couldn't have predicted that."