Precision Focus

Fujinon's exclusive Precision Focus Assist is now in the third generation and features improved focusing response, lower light loss, and reduced size. The PF system is the only focusing system that can maintain focus a any zoom position from the narrowest to the widest angle.

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-forming 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. (On lens mounting, the focus area is initially fixed in the central area of the screen.)

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.

Reducing camera operator’s burden

The PF assistance system constantly provides precise focusing when it is difficult to see whether the viewfinder image is in perfect focus. The operator can concentrate on framing the shot, knowing that the subject will be in perfect focus. It is especially effective when focusing is difficult, as when the camera is in a very low or a high position.