In this live shooting, the lettering on the rooftop about 800 meters away is clearly legible, with stable outlines and no obvious blur or ghosting. Behind and to the side of it, high-rise urban buildings about 7 kilometers away are also captured in the frame with clear imaging. With the naked eye under the same scene, only the rough outlines of the buildings can be seen, but after being equipped with the WH-Clear 25-150mm F1.4 HD long-wave uncooled infrared continuous zoom lens, the rooftop lettering at about 800 meters and the details of the buildings 7 kilometers away are truly recorded. This segment of live footage intuitively demonstrates the lens's imaging performance in long-distance scenes.

1. Wide-Angle Panorama: 25mm, Full Building in One View

    The video begins at the 25mm wide-angle end. Under a 34.15°×27.61° wide field of view, the high-rise building and its surrounding area are both captured in the frame. Without frequently adjusting the camera position, a thermal imaging scan of the entire building facade can be completed. The edges of the image transition naturally, and the overall field of view is broad, providing a complete panoramic foundation for the subsequent zoom push-in.

2. Telephoto Push-In: 150mm, From Panorama to Details

    The lens smoothly zooms from 25mm to the 150mm telephoto end, and the 5.86°×4.69° narrow field of view focuses the image on the rooftop. In the live footage, the rooftop lettering about 800 meters away is clearly legible, and the building outlines and surface details are presented stably; the high-rise urban buildings about 7 kilometers away behind and to the side are also clearly imaged with distinct layers. Throughout the entire zoom process, there is no stuttering, frame skipping, ghosting, or optical axis shift in the image. The focus remains locked, and the video is smooth and stable.

3. Large Aperture: Stable Imaging in Complex Environments

    Relying on the F1.4 large aperture and the 8μm~12μm long-wave infrared band configuration, the lens can still capture temperature signals in environments such as pitch-dark nights, thin fog and dust, and backlit strong light. In the live video, the temperature differences of the buildings are clearly layered, and the temperature distribution of long-distance targets can be distinguished. High signal-to-noise ratio imaging makes the image cleaner, and details of long-distance buildings are easier to identify.

4. Lightweight & Durable: Flexible for Live Shooting

    The whole unit weighs ≤1.8kg and is compact and lightweight. Whether for fixed gimbal monitoring, pod-mounted aerial photography, or manual handheld inspection, it is relatively flexible. With full-range focus from 5m to infinity, both near and far building targets can be quickly focused and locked. The front surface uses an AR anti-reflection coating, with an optional DLC hard protective coating, offering dustproof, moisture-proof, wear-resistant, and corrosion-resistant performance. It can withstand outdoor wind, frost, rain, and snow, and is suitable for long-term stable service in outdoor scenarios such as building security, fire inspection, and building energy-saving detection.

5. Summary: One Lens for Panorama & Details

    The entire real-scene shooting shows that the 25-150mm F1.4 HD long-wave infrared zoom lens completed a full push-in from 25mm wide-angle panorama to 150mm telephoto details in live shooting. The rooftop lettering about 800 meters away is clear and ultra-sharp, and the buildings about 7 kilometers away behind and to the side are clearly imaged. The image remains stable and smooth throughout the entire zoom, and the all-weather imaging capability is verified in real scenes. The panorama can inspect the entire area, and the telephoto can detect details. With robust optical performance, it empowers intelligent building monitoring and is a high-performance preferred tool for smart security, building inspection, and outdoor infrared image acquisition.