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Shutter : Shutter is the "pseudo" mechanism for controlling light energy
AGC :
.
User's manual
by varying CCD exposure time. For normal indoor use,
shutter speed is usually set to 1/60 sec
stronger light condition, shutter speed must be reduced, or
image could be too bright. For darker scene, shutter should
be increased.
This camera offers 3 options to you:
ESC
If iris is set to "manual" mode, ESC is the choice
(auto):
used for the most conditions. Software will check
light level and set up shutter speed automatically.
Manual:
to assign a fixed shutter speed
This can be the choice if camera stays indoor
with constantly stable ambient light.
In normal light, try speed between 1/60 --- 1/500.
Be advised that, for speed higher than 1/120,
color rolling can be easily observed.
In faint or dark, use extended exposure (x2, x4,
---); Try the low number first. If picture is still dark
and with too much noise, try higher times.
Extreme high speed
sens-up
recommended unless in extreme condition.
Anti-Flicker: Automatically set the shutter speed to 1/50
for PAL system)
normal lighting system
light environment)
Auto-Gain-Control, for keeping video output level stable and
stays within standard range. Turn AGC to high in dark, or low
in strong light condition;
note:
If you turn the AGC off, then SNR and sens-up functions will be
defeated automatically. (see OSD table 4)
For the 4 grades of PTZ this manual serves, they have different
AGC options. Check the table on below for reference..
(1/2000 and above)
exposure
(x64,
to avoid the flicker created by the
(especially in the fluorescent
. In
(1/50 for PAL )
and
are
not
x128)
(1/60
57
.
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