--- title: "Questions and answers about PTZ cameras - Ventas de Seguridad" description: "Through a series of questions, readers will be able to know how much they know about PTZ cameras." url: "https://www.ventasdeseguridad.com/en/news/latest-news/431-enterprises/22281-questions-and-answers-about-ptz-cameras.html" date: "2026-07-23T18:32:56+00:00" language: "en-GB" --- # [ Questions and answers about PTZ cameras](https://www.ventasdeseguridad.com/en/news/latest-news/431-enterprises/22281-questions-and-answers-about-ptz-cameras.html "Questions and answers about PTZ cameras") Details 15 July 2022 ![PTZ](https://www.ventasdeseguridad.com/images/stories/VDS/2022/Preguntas_y_respuestas_sobre_las_cmaras_PTZ.jpg) *Latin America.* Through a series of questions, readers will be able to know how much they know about PTZ cameras. Pan Tilt Zoom (PTZ) cameras are useful because they can move, tilt, and zoom, of course, but some models also have innovative features that take the security system to the next level. **\* True or false: IR lighting is always ineffective on PTZ cameras because the zoom distance far exceeds the capacity of the integrated IR system.** False. Zoom priority mode, available with selected Dahua PDZs, provides optimal IR coverage in any zoom setting. The camera has different sets of built-in IR illuminators that turn on and off depending on whether the camera is in wide-angle or extended mode. This gives you uniform illumination at wide angles and reduced power at narrow angles. - Publicidad - **\* True or false: All long-range PTZ cameras suffer from issues like blur, shaking, and slow focus.** False. [Dahua's predictive focus algorithm (PFA),](https://comunicacionenmov1.mx-router-i.com/c/59r81/01iewwcs/pbjyc6ttre8) available in select PDFs, eliminates these issues and improves video clarity with high-speed continuous autofocus. PFA uses advanced focusing technology to ensure the accuracy and predictability of adjusting the subject's distance. This means that, unlike traditional PDCs, where the image is refocused when the camera is repositioned, PFA cameras maintain focus throughout the zoom process. See PFA in action [here](https://comunicacionenmov1.mx-router-i.com/c/59r81/01iewwcs/hmn5pxtilju). **\* Which feature controls the camera's pan, tilt and zoom actions to automatically follow a moving lens?** Automatic tracking. This feature, available on Dahua's AI PTZ cameras of 5" and above, allows the PTZ to detect a moving target and automatically follow it throughout the camera's range of motion. This capability can be further enhanced by activating the IVS function on the PTZ, which will activate it to track a target as it crosses a particular demarcation area. Watch the automatic tracking in this video. **\* What does EIS mean and what does it do?** Electronic Image Stabilization counteracts some of the vibration, and the accompanying blur, inherent in a windy environment or a location with nearby traffic. EIS provides a more stable field of view and expands mounting options, as the PTZ can be installed on a pole or hanging formation without being unduly affected by vibration. Plus, with less camera shake, it saves bandwidth and storage space! In addition, other PTZ cameras are also equipped with OIS or optical image stabilization. This hardware solution does not require image cropping as it uses the full sensor reading to capture images. It helps reduce image distortion and produces more natural videos that are significantly better than EIS. **\* True or false: With so many options, it is very difficult to find the right PTZ IP.** False. [Dahua's website](https://us.dahuasecurity.com/) makes the PTZ selection process very straightforward. Simply visit our website www.dahuasecurity.com and click on the Product tab. In the selections, choose PTZ Cameras to see the list of Dahua PTZ camera categories. Then you can see the right PTZ camera that suits your monitoring needs. ![Duván Chaverra Agudelo](https://www.ventasdeseguridad.com/images/stories/VDS/Editorialonline.jpg) Duván Chaverra AgudeloEmail: dchaverra@latinpressinc.com Editor Jefe Jefe Editorial en Latin Press, Inc,. Comunicador Social y Periodista con experiencia de más de 13 años en medios de comunicación. 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