Lenses: LG-2V1803-MP5, LVF-5005C-S1803 can block IR filter causing day or night switch failure

[#1]

Possible causes and solution(s)

• Causes

IR filter sometimes fails to switch during day/night change

Affected camera models: NBN-932, NBN-832, NBN-733, NBN-63013-B, NBN-63023-B, NBN-65023-B, NBN-73013-BA, NBN-73023-BA, NBN-75023-BA

The inner tube of lenses LG-2V1803-MP5 and LVF-5005C-S1803 can hit the IR filter frame and block the mechanism. This can happen in the maximized slider situation. Result is the day/ night switch can sometimes fail.

 

See above showing the inner tube of the lens,  and in second picture the DINION IR filter frame

• Solution

When installing the lens follow the following steps:

1. Open the Lens Wizard in the camera web interface and click the Center button to center the motorized back focus mechanism
2. Manually focus the lens by rotating the focus ring on the lens
3. Click Local Range Autofocus button in the Lens Wizard to fine tuning the focus settings.

If the steps above are followed the lens will not touch the IR filter.