E-86
12. FEATURES OF THE CAMERA SECTION
This switch allows the gain to be boosted when the illumination
of the subject is insufficient.
The gain should be switched when the brightness is insufficient due to poor lighting conditions.
GAIN SWITCHING
When the GAIN switch is switched, the newly set gain is
displayed for about 3 seconds on the Status (0, 1, 3) screen in
the viewfinder or LCD monitor.
Set it to L (0 dB) in normal use.
■
The gain set for each of the switch positions can be changed
with “GAIN” on the CAMERA OPERATION menu screen.
It is also possible to use the ALC function that varies the gain
automatically.
A setting at –3dB corresponds to a decreased sensitivity
equivalent to the brightness of a 1/2 filter.
☞
See page 71 for details.
■
The gain transition can be made smoother by selecting
“SMOOTH TRANS” on the CAMERA OPERATION menu
screen.
☞
See page 71.
However, note that the SMOOTH TRANS function is not
available if gain is set to ALC.
Switch Position
Factory-Set Gain
L
0dB
M
9dB
H
18dB
The LOLUX button is used when the illumination is still
insufficient after compensating with the GAIN switch.
Pressing the LOLUX button again will enter the LOLUX mode.
The gain up value during the LOLUX mode is set in LOLUX
GAIN of the CAMERA OPERATION menu.
“LOLUX ON” is displayed for about 3 seconds on the Status
(0, 1, 3) mode screen in the viewfinder or LCD monitor.
Pressing the button again cancels the LOLUX mode.
“LOLUX OFF” is displayed for about 3 seconds.
■
When the LOLUX function is in use, the image definition on
the screen will degrade to increase residual images, but this
is not a malfunction.
GAIN BOOST UNDER LOLUX CONDITION
Relationship between gain, iris and shutter
AUTO IRIS
BACK L
NORMAL
SPOT L
STRETCH
NORMAL
COMPRESS
FULL AUTO
BLACK
LOLUX
MODE
POWER
ON
OFF
VTR
VTR
CAM
F1.4
F11
F16
LOLUX
FULL AUTO SHOOTING
ALC
AUTOMATIC IRIS
EEI
36 dB
12dB
0 dB
1/50
1/200
0.2 Lx
32 Lx
8 Lx
2000 Lx
4200 Lx
18000 Lx
12-5 Gain (Sensitivity) Adjustment
AUTO IRIS
BACK L
NORMAL
SPOT L
STRETCH
NORMAL
COMPRESS
FULL AUTO
BLACK
LOLUX
MODE
POWER
ON
OFF
VTR
VTR
CAM
GAIN switch
LOLUX on/off button
When gain is set to “ALC”, gain is boosted automatically
as the illumination becomes darker. However, noise will
increase a little because the screen becomes brighter as
the ALC (Auto Level Control) function boosts the gain more
than in the case of manual adjustment.
CAUTION: