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24 C3463M-B (2/11)
PT Focus Lock
Pan/tilt (PT) focus lock holds the focus position of the lens during PTZ to maintain accurate focus between scenes, especially during the
execution of presets and in low-light scenes. There are two settings:
ON: PT focus lock is enabled.
OFF (default): PT focus lock is disabled.
ZOOM LIMIT
(Applies to 27X and 35X models only.)
Zoom limit allows the user to define a limitation on the amount of telephoto zoom. The settings vary depending on camera model.
23X (Models DD423 and DD423-X)
The default setting is 32X. The zoom limit cannot be changed for 23X models.
27X (Models DD427 and DD427-X)
The default setting is 54X. Cameras with 324X zoom (27X optical zoom and 12X digital zoom) can be set for 27X, 54X, 108X, 216X, 270X, or 324X.
35X (Models DD4CBW35 and DD4CBW35-X)
The default setting is 70X. Cameras with 420X zoom (35X optical zoom and 12X digital zoom) can be set for 35X, 70X, 140X, 280X, 350X, or 420X.
ZOOM SPEED
(Applies to 27X and 35X models only.)
Zoom speed allows the user to define the speed at which the dome will go from full wide zoom to the optical zoom.
The zoom speed is set to 4.2 seconds and cannot be changed for 23X models.
Available zoom speed settings for 27X and 35X models include:
HIGH: 3.2 seconds
MEDIUM (default): 4.6 seconds
LOW: 6.6 seconds
NOTE: When using the HIGH setting, the image may be out of focus until zooming stops.
LOW LIGHT LIMIT
(Applies to 27X and 35X models only.)
Low light limit is the maximum duration, in fractions of a second, that the electronic shutter will remain open in low light conditions. The default
setting is 2. Refer to Table B for available settings.
Table B. Low Light Limit Settings
Setting Duration of Open Electronic Shutter
2 (default) 1/2 second
41/4 second
81/8 second
15 1/15 second
30 1/30 second
60 1/60 second