Also Known as Dolly Zoom or the reverse tracking forward zooming shot,This over-used shot is now a cliche for hollywood horror flicks.Introduced in 1958.But haven't seen this effectively used in the indian screens yet,Though a couple of unsuccessful attempts.
The effect is achieved by using the setting of a zoom lens to adjust the angle of view (often referred to as field of view) while the camera dollies (or moves) towards or away from the subject in such a way as to keep the subject the same size in the frame throughout. In its classic form, the camera is pulled away from a subject whilst the lens zooms in, or vice-versa. Thus, during the zoom, there is a continuous perspective distortion, the most directly noticeable feature being that the background appears to change size relative to the subject. [wikipedia]
An Example:
In Jaws, The "track forward, zoom out" shot where the background narrows as Brody realizes someone has been attacked by a shark is a reverse of the "zoom in and track backwards" shot to make the background suddenly widen. It was originally used by Irmin Roberts to represent the dizzying heights in"Vertigo" (1958).
CONSTANT FOCUS
is a new update where both the background and foreground are in focus,like in a cartoon.
Click here to know more about constant focus
cool info bro
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