When To Use IR Corrected Lenses

Issue

IR Focus Shift

I have focused the Day Night camera at night and the video quality is still hazy only at night. Day time color is fine.

Product Line

Pelco Cameras

Environment

  • 13VDIR Series
  • Fixed Day/Night Cameras

Cause

Focus shift occurs at night. Blurred images, reduced image quality. 

Resolution

Be sure the camera has been focused when camera has switched to BW video in a low light scene of view.  If the video quality is still lacking you will need a corrective lens.

Review the attached White Paper for "When To Use IR Corrected Lenses".

IR Corrected Lenses offered by Pelco are the following:

  • 13VDIR2.8-11
  • 13VDIR3-8.5
  • 13VDIR7.5-50

Example of Non IR Lens vs IR Lens