Cinematography can not only depict a moving subject but can use a camera, which represents the audience's viewpoint or perspective, that moves during the course of filming. This movement plays a considerable role in the emotional language of film images and the audience's emotional reaction to the action. Techniques range from the most basic movements of panning (horizontal shift in viewpoint from a fixed position; like turning your head side-to-side) and tilting (vertical shift in viewpoint from a fixed position; like tipping your head back to look at the sky or down to look at the ground) to dollying (placing the camera on a moving platform to move it closer or farther from the subject), tracking (placing the camera on a moving platform to move it to the left or right), craning (moving the camera in a vertical position; being able to lift it off the ground as well as swing it side-to-side from a fixed base position), and combinations of the above. Early cinematographers often faced problems that were not common to other graphic artists because of the element of motion