Table of Contents
Advertisement
5. ALC
ALC is for brightness control functions Auto Iris, AGC and AES.
1) OVER RIDE : Auto iris level setting
ALC level setting in range of -128 to 127 (about ±2 F stops).
Press R and L for respectively higher or lower video level
settings.
Press both L and R for about 2 seconds to set to 0.
2) SPEED : AGC and AES response speed
SLOW
: Slow response to scene light variations.
•
STANDARD : Normal setting
•
FAST
: Quick response to scene light variations.
•
3) PEAK/AVERAGE : Set auto level control for Peak or Average in 4 steps of 50/50, 25/75, 18/85 or 0/100.
At high Average setting, background may be difficult to see in picture bright components. Increasing the
Peak setting may render spotlighted components easier to see.
4) ALC GATE : ON/OFF toggle
ON : Video signal of the specified area is detected for controlling AGC, lens and ALC of auto electronic
•
shutter. GATE SELECT is displayed 1 line below and the detection area can be selected.
OFF : Video signal of the entire screen is detected for ALC control.
•
20
Allows a stable image when a strong light source.
e.g. vehicle headlights, enters the scene.
It is used where variations are sudden, such as changing a microscope magnification.
ALC
[ FILE1 ]
OVER RIDE
:
0
SPEED
:STANDARD
PEAK/AVE
:15/85
ALC GATE
:ON
GATE SEL
:MANUAL
MANU GATE EDIT:[PUSH R]
Advertisement
Table of Contents
