6 dnr (dynamic noise reduction), 7 sens-up – EverFocus ED550 User Manual
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5.6 DNR (Dynamic Noise Reduction)
 
Dynamic Noise Reduction in video images has the following effects. 
1. Images are brighter and sharper. 
2. When the level of noise is reduced, the performance of a camera can apparently be 
improved. 
3. When it is recorded digitally, reduced noise can reduce image file size. 
 
As the level of gain changes, the background noise in the low light level automatically 
decreases. 
1. Please direct the arrow to point to “DNR” on the SETUP menu by adjusting the switch to 
UP or DOWN direction. 
2. Select the mode you would like to operate by adjusting the switch to LEFT or RIGHT 
direction. 
Ö OFF: No reduction in noise level. 
Ö LOW: Little reduction in noise level with nearly no ghost image. Default value is 
LOW. 
Ö MIDDLE: Just enough reduction in noise levels without causing much ghost 
imaging. 
Ö HIGH: Huge reduction in noise level, which may cause much ghost imaging. 
5.7 SENS-UP
 
SENS UP is used to keep a brilliant, vivid screen image by automatically detecting changes in 
the level of light under low light level conditions. 
1. Please direct the arrow to point to “SENS UP” on the SETUP menu by adjusting the 
switch to UP or DOWN direction. 
2. Select the mode you would like to operate by adjusting the switch to LEFT or RIGHT 
direction. 
Ö AUTO: Low light level auto mode. Default value is AUTO (Up to X 10).
SETUP
LENS DC <┘ 
SHUTTER ___ 
WHITE BAL. ATW 
BACKLIGHT OFF 
AGC MIDDLE 
> DNR LOW
SENS-UP AUTO <┘ 
SPECIAL <┘ 
EXIT 
NOTE: 
When AGC is turned off, DNR will be disabled.