Pan Tilt Zoom (PTZ) cameras are useful because they can pan, tilt, and zoom, of course, but some models also have innovative features that take your security system to the next level. Test your PTZ knowledge with this quiz.

  1. True or false: IR illumination is always ineffective on PTZs because the zoom distance far exceeds the capability of integrated IR system.
    Zoom priority mode, available with select Dahua PTZs, provides optimal IR coverage at any zoom setting. The camera has three different sets of integrated IR illuminators that turn on and off according to whether the camera is in wide angle mode or zoomed in. This gives you even illumination at wide angles and reduced power at narrow angles.
  2. True or false: All long-range PTZ cameras suffer from issues such as blurriness, shakiness, and slow focus.
    Dahua’s Predictive Focus Algorithm (PFA), available on select PTZs, eliminates these issues and improves video clarity with high-speed, continuous autofocus. PFA uses advanced focusing technology to ensure the accuracy and predictability of subject-distance adjustment. This means that unlike traditional PTZs where the image snaps back into focus when the camera repositions itself, cameras with PFA maintain focus throughout the zooming process.  See PFA in action here.
  3. Which feature controls the pan-tilt-zoom actions of the camera to automatically track an object in motion?
    This feature, available on Dahua’s Pro- and Ultra-series PTZs, lets the PTZ detect a moving object and automatically follow it throughout the camera’s range of motion. This capability can be further enhanced by activating the tripwire feature on the PTZ, which will trigger it to track an object as it crosses a particular area of demarcation. Watch autotracking in this video.
  4. What does EIS stand for and what does it do?
    Electronic Image Stabilization 
    counteracts some of the vibration – and the accompanying blurring  – inherent to a windy environment or a location with traffic nearby. EIS provides a steadier field of view and expands the mounting options, since the PTZ can then be installed on a pole or in a hanging pendant formation without being unduly affected by vibration. Plus, with less camera movement, you save on bandwidth and storage space!
  5. There is a difference between PTZs with and without that clear bubble over them.
    Dahua PTZs are available with a bubble or just a piece of flat glass in front of the sensor. Utilizing PTZs without a bubble minimizes distortion and allows for an image that is optically clear in all directions.
  6. True or false: with so many options, it’s really hard to find the right IP PTZ.
    Dahua’s website makes the PTZ selection process a breeze! Go to the Camera Product Selector. Use the filter to show IP cameras, and then filter again under PTZ Zoom Factor to see options.

To learn more about Dahua’s full line of IP PTZ cameras, click here. For HDCVI PTZs, click here.

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