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Knowledge Base

Adjust the field of view and focus of a varifocal video device

A varifocal lens on a video device allows the user to zoom in and out using the Alarm.com customer website. Zooming in focuses on the center of the video device's field of view. Any adjustments to the angle should be done manually on the camera itself.

Benefits of a varifocal lens

  • Zoom in without losing video quality.
  • The camera can adapt to a user's changing needs. Zoom in to target a specific area from far away or zoom out to capture more of a small space.
  • A camera with a varifocal lens is more versatile and can be used in a wider range of installations.

Compatible cameras 

  • Pro Series 4MP Bullet PoE Camera with Varifocal Lens (ADC-VC728PF)
  • Pro Series 4MP Varifocal Turret Camera (ADC-VC838PF)
  • Pro Series 1080p Dome PoE Camera with Varifocal Lens (ADC-VC847PF)
  • Prism Series 8MP Varifocal Bullet PoE Camera (ADC-VC7398PA)
  • Prism Series 8MP Varifocal Dome PoE Camera (ADC-VC8498PA)

Adjust the field of view and focus

The field of view can be adjusted using the Alarm.com customer website.

Important: The device's Video Analytics rules and calibration need to be updated whenever the field of view or focus is adjusted.