Flange-Back (Back Focal) Adjustment For Optional Lenses - Panasonic WV-CW484 Série Mode D'emploi

Flange-back (Back Focal) Adjustment for Optional Lenses

This adjustment can be also performed on the setup menu.
Refer to p. 41. Back-focus Setting for details.
Important: Do not use the ABF function for continuous or repetitive purposes (ex. auto-focus
etc.). This function is to be used to correct defocus caused by switching between color and
black - and - white when/after installing the camera.
Hints
Before Back-focus Adjustment
• Adjustment procedures vary depending on the lens. Refer to the instructions includ-
ed with the lens.
• Reset the back-focus by pressing the [LEFT] and [RIGHT] buttons simultaneously on
the camera, and adjust the back-focus.
• Move the lens focus to the FAR-end when using a fixed-focal lens (lens focus
adjustable type), and adjust the back-focus.
For Adjusting the Focus
• It is recommended that you lower the lighting for the object to be as dim as possible
when adjusting the focus with an auto iris lens. This will make the iris open and will
result in an accurate focus even though the lighting conditions vary. This may be
slightly different from the best focus point in a specific lighting condition.
• Compared with cases under visible lights, using near-infrared lights may somewhat
deviate the focus. It is recommended that you select AUTO or PRESET for C/L ↔
B/W in the BACK-FOCUS SETUP menu to obtain a proper focus for each of visible
and near-infrared lights.
For Using General Vari-focal Lenses
1. Aim at the objects 10 meters away or more to adjust the back-focus.
2. For 8x and 10x class lenses, set the zoom to the WIDE-end and the focus to the
FAR-end, and then adjust the back-focus.
3. For 2x and 3x class lenses, set the zoom to the TELE-end and the focus to the FAR-
end, and then adjust the back-focus.
4. Aim the camera at the targeted objects to place them in the center then coarsely
adjust the zoom angle and the focus of the lens. Finally, perform adjustment of the
back-focus in either ways of using ABF (automatically) or MANUAL-ADJ (manually).
Note: There may be lenses having an extended range in lens focus adjustment, except
Panasonic lenses. When using such a lens, set the lens focus back appropriately
from the applicable end position in the above step 2 and 3 depending on the lens,
and then perform back-focus adjustment. The back-focus will not be properly adjust-
ed if the lens focus is positioned into the extended range.
26