Back Focus Adjustment; White Balance Adjustment; Full Auto White Balance (Faw) - JVC GY-HD110U Instructions Manual

PREPARATIONS FOR OPERATION

Back Focus Adjustment

Siemens star chart
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It is only necessary to perform this when the lens is attached
for the first time or when focusing is not correct in both the
telephoto and wide-angle positions.
• It is easier to adjust back focus when the subject is more
than 3 meters from the camera.
The optimal subject for this adjustment is a Siemens star
chart.
1.
Set the IRIS mode switch to M (Manual).
2.
Set the zoom mode to M (Manual).
3.
Open the iris by turning the iris ring.
If the illumination is too strong, reduce it or move to a
darker place.
4.
Turn the zoom lever until the lens is at the maximum tele-
photo position.
5.
Bring the subject into focus.
6.
Set the lens to maximum wide-angle.
7.
Loosen the back focus ring retaining knob.
8.
View the same subject and adjust the back focus ring for
the best possible focus.
9.
Repeat steps 4. through 8. about three times for fine
adjustment until the subject remains in focus in both the
telephoto position and the wide-angle position.
10.
Tighten the back focus ring retaining knob to secure the
ring.

White Balance Adjustment

Iris mode switch
ND filter
WHT.BAL
switch
POWER switch
AWB button
During operation Result message
Improper object Insufficient illumination
Excessive illumination
CAUTION
• Do not adjust using any highly reflective objects, such as
metal, etc., as this may result in improper white balance
adjustment.
• The FAW (Full Auto White balance) function cannot pro-
vide optimum white balance with a subject outside the
FAW adjustment range, for example when it contains only
a single color or not enough white color.
• The accuracy of the FAW (Full Auto White balance) is
inferior to that of the Auto white balance.
• When the power is turned on with the FAW mode
selected, it takes about 10 seconds for the FAW adjust-
ment to be completed.
Do not shoot within this interval.
PREPARATIONS FOR OPERATION
Since the color of light (color temperature) varies depending
on the light source, it is necessary to re-adjust the white bal-
ance when the main light source illuminating the subject
changes.
White Balance Adjustment
Two kinds of white balance adjustment results can be stored
in memories AUTO A and AUTO B.
Adjustment procedure
1.
Set the following switches.
• Set the POWER switch to ON.
• Set the IRIS mode switch of the lens to A (Auto).
• Set the FULL AUTO switch to OFF.
2.
Set the ND filter switch according to the current lighting.
3.
Set the WHT.BAL switch to A or B.
4.
Place a white object near the center of the screen under
the same lighting conditions as the target subject and
zoom in to fill the screen with white.
5.
Press the AWB (Auto White Balance) button.
"AUTO WHITE A, B OPERATION" is displayed in the
viewfinder while the auto white balance adjustment circuit
operates.
When correct white balance is obtained, the approximate
color temperature is displayed together with "AUTO
WHITE A, B OK" for about 5 seconds.
Error messages
If the adjustment ends abnormally, an error message, as
described below, blinks for about 5 seconds.
• NG: OBJECT (Improper object)
Displayed when there is not enough white color on an
object or the color temperature is not suitable.
Replace the color temperature conversion filter or use
another white object and re-adjust the white balance.
• ERROR: LOW LIGHT (Insufficient illumination)
Displayed when the illumination is dim. Increase the illumi-
nation and then re-adjust the white balance.
• ERROR: OVER LIGHT (Excessive illumination)
Displayed when the light is excessively bright. Decrease
the illumination and then re-adjust the white balance.

Full Auto White Balance (FAW)

The FAW function adjusts the white balance value automati-
cally as the lighting condition changes.
This mode is convenient when you have no time to adjust the
white balance or when the camera is moved frequently in and
out of places under different lighting conditions.
Setting procedure
The FAW function can be activated with the FAW item on
the SWITCH MODE menu screen. The FAW function can
be allocated to one of the white balance switching switches
A, B, or PRESET.
X See page 71.
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