The truth about security cameras that 'zoom to the moon'

The Dahua PTZ85848 camera model has good zoom capabilities, but cannot clearly illuminate the Moon with just the optical lens. Photo: Dahua .

Recently, a post has been circulating on social media claiming that a security camera called “Dahua PTZ85848” has the ability to “zoom” to the moon, accompanied by impressive illustrations.

According to the poster, this camera has the ability to record details of the Moon's surface. This information has caused many people to question its authenticity.

The camera in question is one of the high-end products of security surveillance solution provider Dahua Technology. According to official information from Dahua's homepage, the full name of this camera model is "Dahua Ultra AI Series 8MP 48x Starlight IR PTZ AI Network Camera" (DH-PTZ85848-HNF-PA-FL).

Video shows the impressive Zoom capabilities of the Dahua PTZ85848.

The camera's specifications are quite impressive. The device has an 8 megapixel resolution (4K), 48x optical zoom capability that allows you to magnify objects at a distance while maintaining image quality.

In addition, Starlight technology supports clear observation in low light conditions. The camera is also equipped with infrared vision up to 500 meters, serving surveillance in low light environments. In addition, the built-in AI (artificial intelligence) feature supports smart functions such as facial recognition, people counting, and perimeter protection.

One thing to note is that this camera is not cheap. With a price of 3,000 USD (about 75 million VND), this is a product aimed at professional surveillance projects or customers with high requirements for image quality and special surveillance capabilities.

Despite its impressive specifications, the ability to "zoom to the Moon" as in the video of the Dahua PTZ85848 is impossible.

The distance from Earth to the Moon is about 384,400 km. Even specialized telescopes, with the ability to magnify hundreds to thousands of times, can only observe the Moon's surface with certain details.

Therefore, the image of the moon that is said to be "clear zoom" from this camera is likely to have been interfered with by artificial intelligence (AI) technology to improve quality or is the result of digital editing.

A security camera's ability to "zoom to the moon" is actually just an exaggeration, meant to highlight the device's superior magnification capabilities.

However, according to some videos published by Dahua itself and reviews from the user community, the company's high-end camera models have amazing zoom capabilities. They can clearly zoom in on objects hundreds of meters away, allowing for detailed recognition of faces or license plates from a distance.

Dahua cameras can zoom in on a house on a mountaintop that is almost invisible to the naked eye. Photo: Dahua.

It's all thanks to optical zoom technology. In essence, optical zoom is a mechanism for adjusting the focal length of the lens to enlarge or reduce the image without losing quality.

This is different from digital zoom, which simply magnifies existing pixels, resulting in a pixelated or blurry image. Optical zoom, on the other hand, works by moving the internal lenses, allowing more light and detail from distant objects to be captured.

Dahua Technology, founded in 2001, is now one of the major video surveillance solution providers globally. The company stands out for its cutting-edge technology and diverse product portfolio, from security cameras, video recorders, video management systems to smart integrated solutions with artificial intelligence.

Source: https://znews.vn/thuc-hu-camera-an-ninh-zoom-den-mat-trang-post1566842.html