User Manual

3.2.3.4 Focus

Focus sets the back focus to the center focal point of the scene. The camera can be configured to back focus automatically or

manually. Auto focus automatically back focuses the camera on the subject in the center of the scene. Manual focus turns off

the auto focus mechanism and locks the camera at a user-specified position. The manual focus setting is recommended only

for indoor applications that have a single, unchanging primary light source. The Focus page also includes Full Range

Auto-Focus, Quick Auto-Focus, and a Restore Settings to Defaults.

FIGURE 3-26: FOCUS SETTINGS

Focus

 Auto Focus

1. Temperature Change Refocus: The camera is programmed to run a quick automatic focus sequence when the

internal temperature sensor of the camera detects an environmental temperature change of 41°F (5°C). This focus

sequence adjusts the center focal point of the scene to maintain optimal focus. The default setting is Off; select On

to turn on this setting.

2. Day/Night Switch Refocus: The default setting for the Day/Night Switch Refocus is Off. Select On if the camera’s

focal length is greater than 25 mm or the night scene uses mostly IR lighting. The best method to determine if the

day/night refocus should be enabled is to test the camera with the daytime light conditions, and then test it again

with the nighttime light conditions.

When enabled On this setting refocuses the camera when the camera changes from day mode (color) to night

mode (black-white) or vice versa. For example, if the camera changes from day mode to night mode, the imager

automatically adjusts the back focus for the change in light.

3. If required, use one of the following buttons to adjust the focus:

 Full Range Auto-Focus: The camera starts a full-range search to find the optimal focal point for the scene.

 Quick Auto-Focus: The camera searches for the optimal focal point in a limited range.

 Restore Settings to Defaults: The camera resets the auto focus to the factory default setting.

NOTE: Auto Focus function is available in motorized models only.

 Manual Focus

Select Manual Mode. Two sliders will appear, one for Day Manual Focus Position, the other for Night Manual Focus

Position. Each slider will show a value that is the best focus position for the camera during the day and night.