Current Challenges
Why Big Zoom PTZ Cameras Are Trending But Troublesome
As more folks need to keep an eye on things from far away, large optical zoom PTZ cameras are popping up everywhere. But, there’s a snag—most of these cameras have some issues with the tech inside that can mess up your viewing experience, especially when you zoom in:
- The picture gets super blurry.
- The camera can’t hold still (shaky, shaky).
- It takes forever to focus.
These glitches are a real bummer because even a few seconds of blurry video can mean missing crucial info or evidence. That’s a big deal if you’re trying to monitor something important.
Dahua’s Fix: PFA Technology
To tackle these hiccups, Dahua whipped up PFA technology. It’s got smarter zooming algorithms that keep your video clear and steady, whether it’s day or night, so you won’t miss the details when you zoom in.
Slow focus
About PFA Technology
PFA, short for Predictive Focus Algorithm, provides a method to achieve continuous, high-precision focus during the entire zooming process. When the device is zooming, the technology analyzes the AF value curve transformation law under the subject distance curve, and adjusts different subject distances within the depth of focus, unifying the statistics to engage in precise subject distance adjustment, thus achieving clarity throughout the zooming process. PFA technology has innovatively introduced new methods of judgement to ensure the accuracy and predictability of the direction of subject distance adjustment. The result is a set of advanced focusing algorithms.
Benefits from PFA Technology
● Ensures clarity throughout the process of zooming
Uses statistical analysis to stabilize the scene, enabling the device to preserve a clear image when zooming
● Eliminates shaking during zooming
Real time analysis and seamless adjustment of subject distance built into the algorithm logic allows for a rapid and stable transition from different subject distances.
● Shortens Focus Time
Due to the continuous execution of focusing algorithms throughout the zooming process, the device has already neared optimal focus upon zoom completion. After zooming, only fine incremental adjustments are needed ensure precise focus, thus substantially shortening focus time.
The realization of PFA technology substantially improves user experience and increases product value.
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