The Oscar for Best Cinematography is a Category historically difficult to predict in which films are often won with great scenery, with sunrises and sunsets. This year's race is torn between the Dark Knight, The Curious Case of Benjamin Button and Slumdog Millionaire.
The Curious Case of Benjamin Button has great outdoor photography and makeup to help Brad Pitt at different stages of rejuvenation which has also been nominated for an Oscar for Best Makeup. Partly as a favorite and I think it will take the Oscar. In particular his battle with Slumdog Millionaire for the Oscar for Best Picture seems that this is going to win ample, an Oscar for Slumdog Millionaire is an indication, not the big favorite here, that won the Oscar for Best Film.
The Dark Knight is technically flawless, it is shown by the large number of nominations in the technical section received. Your photo combined interior and exterior at night mostly, but also rife with scenes of day and this very city. In addition, he has excited the public and critics, and many thought would be nominated for an Oscar for Best Picture. Oscar here could end up being the film lead to a greater number of Oscars.
Slumdog Millionaire is not your best asset in this nomination, but because it is one of the favorites for an Oscar for the Best Picture prize could be increasing their posibilades totals.
Changeling and The Reader have beautiful photographs, well outside the front but I do not think the strength of their rivals might get the Oscar for Best Cinematography, although I repeat, this category has some surprises and have not won the favorite.