Frazier lens

The Frazier lens provides an appearance of a massive depth of field, allowing the foreground and background of an image to be in focus.

In addition to its unique depth of field properties, the Frazier lens is significantly smaller than previous deep focus lenses allowing more versatility and flexibility to cinematographers.

The main feature of the lens, an extended tube with a rotating prism, allows cinematographers to place the camera in a variety of positions for a given shot.

This feature allows directors and camera operators to achieve shots in minutes that previously took cinematographers hours in rigging and designing special sets to accommodate shooting positions.

[1] At the trial, it was discovered that the 60-minute Panavision educational video that the Frazier lawyers had submitted ("in the interests of demonstrating to the Examiner the features and uniqueness of the optical system of this patent application") had eight seconds of a shot that had been created with a different lens.