Bosch VG5-825-ECEV User Manual

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© 2012 Bosch Security Systems, Inc.
850
Greenfield Road, Lancaster PA, 17601 USA
Contact Information:
AMEC: (888) 289
-0096
EMEA:
49 (0) 9421 706566
APR: 86 (0) 756 7633117
VG5-825 Series AutoDome
TBC_10_25_12_VG5_800_AutoFocusIssue
11/12
AutoFocus
“Focus Hunting”
Issue
Page
1 of 1
TECHNICAL BULLETIN
CCTV
VG5 800 Series AutoDome
AutofocusFocus Hunting”
October 25, 2012
Issue Severity:
Products Affected:
High: Act immediately
VG5-825-ECEV
VG5-825-ETEV
Medium: Bosch Security Systems strongly
recommends you take the action(s)
described below.
Low: Advisory
1.0 Issue
A VG5-825 series AutoDome may experience issues when attempting to focus on a scene. The AutoDome
may appear to be “focus hunting,” where the focus may move between the near and far focus limits. The
exact issue differs depending on the AutoFocus mode: One Push or Automatic.
One Push AutoFocus
The One Push mode is the default AutoFocus mode. In this mode, the AutoDome attempts to resolve the
focus in five seconds by quickly focusing near and far to achieve the optimal focus based on the scene. It has
been observed that while in One Push mode and faced with a challenging scene that the AutoDome will set
the focus to a less than optimal focus.
Constant AutoFocus
If the AutoDome is set to Automatic AutoFocus, the camera may continuously hunt for the optimal focus for an
extended period of time before setting the focus to a less than optimal focus.
2.0 Resolution
There is no workaround that will completely eliminate the focus hunting issue. The following tips may improve
the time an AutoDome takes to set the focus and may help to optimize the focus target:
Set the AutoFocus mode to One Push to limit the time the camera uses to set the focus. To set the
AutoFocus mode:
o Navigate to the URL for the AutoDome.
o Click the Settings link at the top of the Livepage. Then, click the Advanced link in the left pane
to expand the options.
o Click the Camera link, and then click the Lens Settings link.
o Select One Push in the AutoFocus selection box.
Issue a PTZ command or resend the preset command (if the scene is stored as a preset). These
actions will force the camera to attempt autofocus again on the scene.
Contact Bosch Repair if the performance has not improved using the recommendations above. Advise
and request RA stating you are experiencing “focus hunting”.
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Summary of Contents

Page 1 - VG5 800 Series AutoDome

© 2012 Bosch Security Systems, Inc. 850 Greenfield Road, Lancaster PA, 17601 USA Contact Information: AMEC: (888) 289-0096 EMEA: 49 (0) 9421 706566 A

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