Panasonic AJ-CX4000GJ Pro 4K/HDR Streaming Camcorder with B4 Lens Mount

User Manual - Page 133

For AJ-CX4000GJ.

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133 –
Chapter 5 Shooting — Flash band compensation (FBC) function
Flash band compensation (FBC) function
The camera is equipped with a function for compensating and reducing band-like interference (called “ash band”) that occurs due to the MOS pickup
device when shooting in environments where ash strobe light such as that from still cameras is present.
Change over time
Shot image
(FBC OFF)
Flash firing
Flash band
Setting the ash band compensation function
Assign the ash band compensation function to the USER buttons.
By pressing the USER buttons that are assigned with the ash band compensation function, the function turns on, and ash strobe from a still camera,
etc. can be detected and compensated.
For details, refer to “Assigning function to the USER buttons” (page 136).
When the ash band compensation function is enabled, [FBC1] or [FBC2] is displayed on the STATUS screen.
INTRVL
HD
FLUO.
14.6V
FBC1
RELAY
HDR CAC
In [FBC1] mode, color may tint at the border between the bright and dark part of the ash band image and at the horizontal border of the ash band
compensation image.
The color tint of the horizontal line may be reduced in [FBC2] mode.
Mode can be switched to [FBC2] mode by pressing the USER button for three seconds or more.
([FBC2] will be displayed on the STATUS screen.)
@
NOTE
t When the ash strobe lights, the following phenomena may occur. These are due to the ash band compensation function and are not malfunctions.
- Moving subjects look as if they have stopped suddenly.
- The resolution when the ash strobe light drops.
- Horizontal lines appear in the video when the ash strobe lights.
(There may be color tint on the horizontal line.)
- Flash bands may appear only in images shot at the time the ash is red.
(There may be color tint on the horizontal line of the ash band.)
t [FBC1] mode functions mostly same as the [FBC] mode (displayed as [FBC] on the STATUS screen) in the camera with rmware below Ver.3.00.
t When using [FBC2] mode, update the rmware of the camera to Ver.3.00 or above and then adjust the setting in the [OPTION] menu [BLACK
SHADING ADJ.]. For information, refer to the download page of the rmware.
Using the ash band compensation function
The ash band compensation function is activated when there are large changes in brightness at the bottom of the screen regardless of whether there
is ash strobe light. The ash band compensation function may be activated depending on the shooting environment such as where a bright window has
zoomed in and then out. So, we recommend use of this function in shooting environments where ash strobe lighting is anticipated.
Even if ash strobe lighting occurs, sufcient ash band compensation function effect may not be obtained in some shooting environments.
Flash band compensation function operation conditions
f The ash band compensation function can be used under the conditions that electronic shutter and digital super gain functions are all not operating.
f Even if the ash band compensation function is enabled, the ash band compensation function is temporarily disabled if the camera is changed to a
mode where the ash band compensation function cannot be used.
When using the function again, return to a mode that can use the ash band compensation function. Flash band compensation function will be
automatically enabled.
The ash band compensation function is disabled once the power is turned off.
Operation of the ash band compensation function ([FBC1]/[FBC2] mode)
f To switch to [FBC1] mode or [FBC2] mode, operate the USER button as follows:
-Switching to [FBC1] mode: Press the USER button once to switch to [FBC1] mode. Pressing the USER button once in [FBC1] mode will turn off the
[FBC1] mode.
-Switching to [FBC2] mode: Press the USER button for three seconds or more to switch to [FBC2] mode. Pressing the USER button for three
seconds or more in [FBC2] mode will turn off the [FBC2] mode.
Pressing the USER button for three seconds or more in [FBC1] mode does not switch to [FBC2] mode. Pressing the USER button once in [FBC2]
mode does not switch to [FBC1] mode.
f Distortions or black image may be displayed while switching to [FBC2] mode. It may take approximately four to ve seconds until a stable image is
displayed.
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