Tracking is when the camera moves with the actors or action, always keeping the subject in view.
- This involves the audience in the action.
Image credit
Dolly
As the name implies, it is a tracking or moving shot, where the camera is mounted on a dolly (trolley) and a rail, and keeps up with the subject/characters by means of a track. The camera is moving smoothly to the front and back. When the camera moves towards the subject (performer), the movement is called as 'Track In', when the camera moves away or back it is called 'Track Back' Shot.
- This ensdures the viewer's involvement in the action.
Tilt
The camera tilts up and down vertically from a fixed position.
- This emphasises the speed or size of an object
e.g. a building or a character. - This may create a feeling of tension or imbalance for the viewer.
Source: EBH Joubert Visual Literacy : Cinematography
http://filmmakersfans.com/5-basic-camera-movement-techniques-that-every-cinematographer-know/
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