PRECISION FOCUS LENSES
PF-BUILT-IN LENSES
Fujinon’s Precision Focus Assist enables camera operators the ability to ensure fast accurate focusing of high definition images under varying conditions. The PF system is the first to incorporate Fujinon’s patented system which utilizes a unique contrast method of achieving precise focus.
FEATURES AND FUNCTIONS
Contrast focusing method
The Precision Focus System adopts a contrast method that utilizes differences in optical path length. It can instantly focus the image without searching for focus and can maintain precise focus even when following moving objects.
CCD A and CCD B are built into the lens barrel to detect the focusing conditions and are positioned at equal distances before and after the camera image form- ing plane.
CAN BE MOUNTED
ON ANY 2/3” CAMERA
The PF function is built into the lens and can be operational with the lens mounted on a 2/3” camera with no additional settings or optional devices. Camera software provides additional viewfinder information on some cameras.
FOCUS MODE SELECTION
The momentary mode provides for PF function only when pressing the button or the continuous mode may be selected for continuous PF function. These two modes of operation provide precise focusing according to the shooting situation, whether a still or moving image.
FOCUS AREA SETTING
When the PF lens is mounted on a camera, a focus area is shown on the viewfinder. The size and the position of the focus area can be changed at the camera operator’s discretion. This function allows greater flexibility in the selection of the focus area depending on the type of production.
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