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Troubleshooting MV Image Quality

Overview

To ensure you get the best possible image quality, please read through the following articles below:

 

If you have followed all the best practices above and are still seeing blurry or images with artifacts, you are likely running into the following issues below. This article goes over the different possible causes and how to mitigate them.

Causes of Other Image Quality Issues

Many of these issues are most seen when using IR illumination in night mode, though some issues can affect footage during the day as well.

  1. The camera is deployed directly underneath a surface and at an angle with which the IR is reflected back onto the camera lens. 
  2. Dust or dirt on the dome.
    • The following image is an example of a night mode image you could get with a dirty dome.
    • dirty_dome.png
  3. Camera is deployed behind a glass window. 
  4. Condensation within the dome or on the outside, like shown in the photo below. Condensation can form due to a poor seal from improper camera installation as well as failure to replace desiccant pack during first time installation.
    • condensation.jpg
    • The following image shows an example of IR reflection due to condensation.
    •  IR-condensation.png
    • The following is an example of how condensation affects images during the day (not using IR illumination).
    • condensation-day.png
  5. The lens gasket not being sealed against the dome optic.
    • The following image shows an example of IR reflection due to poor gasket seal.
    • The following image shows the same camera with a proper gasket seal.

Solving the Problem

Cleaning

Proper camera deployment can help mitigate most of the IR reflection causes. In the case of a dirty dome, a can of compressed air and a microfiber cloth can easily remove dust and other debris. 

Proper Gasket Installation

The most common cause of IR reflection is the lens gasket not being sealed against the dome optic and the IR is reflecting off the interior. This is typically caused by the rubber lens gasket being removed during the camera install. To fix this, make sure the gasket is well seated when putting the dome cover back on. It may be required to take off the gasket and only lightly put it back on the lens. Allow the gasket to compress against the dome when it is closed up.

The following image shows an MV21 with the gasket seated correctly.

 

The following image shows an MV21 with an improper gasket placement.

The following image shows an MV21 with no gasket on.

 

 

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