Q&A #1

A question from a local building and grounds director:

Q: I am currently recording video with DVRs. This gives me the retention I need but my cameras are not giving me the quality I need to identify students. Some of my DVRs are now going “End of Life”. My analog cameras are still working properly even though they are not giving me the proper resolution so I can identify people. What is the best way to correct this problem?

A: This isn't uncommon. Your first issue is the video quality. One way to correct this is to check the camera's lens type. If it's a varifocal lens, then try zooming in closer to obtain the required field of view (so you're able to identify students).

Alternatively, replace the lens with a telephoto lens. Instead of using an 8 mm lens, use a 25 mm lens instead. This will give you a more close-up view of the scene and maybe allow the operator to identify students. Many of the camera manufacturers now offer a lens field of view calculator, which indicates what mm lens will offer you the best field of view based upon your requirements.

As for your DVRs' end of life, try hybrid DVRs. Ensure that the hybrid DVR is compatible with the Video Management Software being considered for future.