The Harry Potter movies have always impressed me with with the cinematography since the third movie.
Harry Potter has been through an amazing amount of cinematographers for a franchaise like this, that normally tries to keep a steady crew...
#3 was shot by Kiwi Michael Seresin, who might be best known for Alan Parker's brilliant neo-noir voodoo masterpiece "
Angel Heart". He also won a BAFTA award for lensing the Frank McCourt-based "Angela's Ashes".
#4 was shot by Roger Pratt, veteran of Harry Potter #2. His credits include Troy, Twelve Monkeys, Burton's Batman and a bunch of other Hollywood Blockbusters. Got an Oscar nomination for "The End Of An Affair" in 1999.
#5 brings in a real heavyweight: Slavomir Idziak, long-time collaborateur of polish directors Kristof Kieslovski and Kristof Zanussi, also responsible for "Black Hawk Down" (got nominated for an Oscar for it). He might have not shot as many films known to Joe Sixpack as the other two, but he is one of the most important cinematographers ever from an artist's point of view.
Don't know why they let him go, but #6 brings us frenchman Bruno Delbonnel who caught Hollywood's eye lensing Le fabuleux destin d'Am?lie Poulain, shooting Infamous and Across the Universe there. He has been nominated for an Oscar for both Am?lie and Un long dimanche de fian?ailles (A Very Long Engagement), won an ASC award for the latter.
Next year's two-part series final will see yet another cinematographer, portugese Eduardo Serra, making him and Roger Pratt the only persons to shoot two Harry Potter movies. He's probably best known for Blood Diamond and last year's Defiance, eventhough his two Oscar nominations were for The Wings of the Dove (1997) and 2003's Girl with a Pearl Earring, which, sadly, was as boring as it was beautifully shot: very.
EDIT: 2001's series debut was shot by multiple-Blockbuster veteran John Seale. He won an Oscar for The English Patient, got nominated for Cold Montain, Rain Man and Witness and shot almost a dozen other Hollywood classics since his commercial breakthrough with 1986's The Hitcher.