JVC GY-HM790CHU 사용자 설명서
40
This function electrically boosts the light sensitivity when
there is insufficient illumination on the object. You can set the
gain of the video amplifier according to the brightness of the
object. Select the setting mode according to your shooting
conditions.
there is insufficient illumination on the object. You can set the
gain of the video amplifier according to the brightness of the
object. Select the setting mode according to your shooting
conditions.
Fixed Gain Mode (Manual Gain Switching)
You can select the gain of the video amplifier using the
[GAIN] switch on the camera recorder.
The default positions of the switch are as follows.
[GAIN] switch on the camera recorder.
The default positions of the switch are as follows.
Memo :
● The gain value of each position can be set to AALCB and
within the range of
A0dBB to A18dBB (in increments of 3 dB)
in the menu. Increasing the sensitivity causes the screen to
appear grainier. (A Page 79)
Automatic Gain Mode (Automatic Gain
Adjustment)
Adjustment)
Set the [FULL AUTO] switch on the camera recorder to
AONB
to enter Automatic gain Level Control (
AALCB fixed). The
gain of the video amplifier is automatically set according to
the brightness of the object.
In this case, the [GAIN] switch on the camera recorder is
disabled.
the brightness of the object.
In this case, the [GAIN] switch on the camera recorder is
disabled.
Memo :
● When [Gain] in the [Camera Function] B [FULL AUTO]
menu is set to
ASW SetB, you can switch the gain with the
[GAIN] switch even if the [FULL AUTO] switch on the
camera recorder is set to
AONB. (A Page 81)
You can change the shutter speed (time for each shooting
frame) using the electronic shutter function. Electronic
shutter can be adjusted manually or automatically.
frame) using the electronic shutter function. Electronic
shutter can be adjusted manually or automatically.
Fixed Shutter Mode (Manual Shutter
Switching)
Switching)
Use the Set button (
R
) to switch between the shutter modes
and the cross-shaped button (
JK
) to switch between the
speeds.
䡵 Switching Shutter Mode
Press the Set button (center of the cross-shaped button) to
turn ON/OFF the shutter.
turn ON/OFF the shutter.
Memo :
● When the shutter is ON, AStepB, AVariableB, or AEEIB
(Extended Electric Iris, i.e. Automatic Shutter mode) may
be selected using [Shutter] in the [Camera Function]
be selected using [Shutter] in the [Camera Function]
menu.
AStepB is the factory default. (A Page 78)
Setting Gain
[L] : 0 dB (No electrical boosting.)
[M] : 9 dB (Boosts sensitivity by about 2.8 times. )
[H] : 18 dB (Boosts sensitivity by about 8 times. )
[M] : 9 dB (Boosts sensitivity by about 2.8 times. )
[H] : 18 dB (Boosts sensitivity by about 8 times. )
[GAIN] Selection
Switch
[FULL AUTO]
Switch
Switch
Setting the Electronic
Shutter
Shutter
Cross-Shaped Button
(
(
JK)
[FULL AUTO] Switch
Set Button (
R)