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| Christopher Nolan using an Imax Camera. |
Imax Cameras are able to increase the resoloution of the shot as they use a larger film frame. The film quality is much better and allows a clearer soundtrack and picture.
Unfortunatley, they are very large (and can be difficult to move), expensive and the frame size means that only a select area can be in focus in any one time.
Christopher Nolan opted to film select scenes in the Dark Knight and Dark Knight Rises, including the opening prolouge and the car chase. The Dark Knight was the first feature film to have been partially shot through Imax and featured less than half an hour of footage filmed on Imax. In comparrison, The Dark Knight Rises (which was released four years later) had over an hour.
The screen Imax movies are shown in often are three stories high, meaning that when watching the film, it is all you can see. This can be used to great effect in film, for example in the opening to the Dark Knight, there is a moment when all the audience will be able to see is a drop.
