VTC-C770DN
10
6.3.1 SHUTTER/AGC>AUTO SETUP menu
NOTICE : The setting AUTO IRIS at SHUTTER/AGC>AUTO SETUP>HIGH LUMINANCE MODE will be
changed to SHUT+AUTO IRIS if MAIN menu-1>LENS is changed to MANUAL.
As a result, the lens iris can NOT be fully opened when MAIN menu-1>LENS>AUTO IRIS>
MODE is OPEN.
This can be recovered by setting SHUTTER/AGC>AUTO SETUP>HIGH LUMINANCE MODE
to AUTO IRIS.
AUTO SETUP
Default
Descriptions
MODE
AUTO
IRIS
Selects the shutter mode from AUTO IRIS or SHUT+AUTO IRIS when
MAIN>LENS>AUTO but it is fixed to SHUT if MAIN>LENS>MANUAL.
AUTO IRIS
- Light level is controlled by an auto iris lens only.
For proper auto iris operation, the auto iris operation mode in MAIN>
LENS>AUTO>MODE must be set to AUTO.
The shutter speed is fixed to the setting at MAIN>SHUTTER/AGC>
MANUAL> SHUTTER in this mode.
Set SHUTTER to 1/60 (NTSC) or 1/50 (PAL) for the best sensitivity
unless it is in Flickerless mode.
To set Flickerless mode: MAIN>SHUTTER/AGC>MANUAL>SHUTTER
must be set to 1/100 (NTSC), 1/120 (PAL) and MAIN>SHUTTER/AGC>
AUTO>MODE to AUTO IRIS.
SHUT+AUTO IRIS
- Light level is controlled by the combination of an
auto iris lens and shutter control to improve the highlight from wash-
out and extend the dynamic range. Shutter speed can vary between
1/60(1/50)~1/10,000sec.
This mode enhances the overall video quality of daylight but may show
a smeared image in bright spotlights. However, color rolling or video
level hunting may occur under a certain lighting condition such as
fluorescent lights.
BRIGHT-
NESS
032
Adjusts the brightness of the image by an auto iris lens or a shutter
speed c an auto iris lens.
MODE
AGC
Sets AGC to compensate the video level when the scene is dim.
BRIGHT-
NESS
x0.50
Sets the brightness level which starts AGC from x0.25, x0.50, x0.75 and
x1.0 of full video level.
If set to x0.50, the camera will start AGC when the video level goes
down to below the 50% level.
HIG
H LU
MIN
A
NC
E
LO
W
LUMI
N
A
NC
E
