Field Test | 18-275mm Cooled MWIR Continuous Zoom Lens: Consistent Clarity, High-Definition Visibility

06 Apr,2026

This video demonstrates the imaging performance of the 18-275mm cooled MWIR continuous zoom lens in real-world outdoor environments. The footage focuses on urban architecture, high-rise buildings, and tower cranes, covering typical use cases from wide-area surveillance to long-range tracking, offering a look at the lens's zoom smoothness and imaging stability under actual conditions.

In the video, the zoom process from the 18mm wide-angle end (FOV 29.9°×24.1°) to the 275mm telephoto end (FOV 2.0°×1.6°) is smooth and stable, free from step jumps or stutter, enabling seamless switching from wide-area search to long-range tracking without secondary focusing. The wide-angle end fully captures the building complex and tower cranes with a broad field of view, facilitating rapid

target acquisition. As the focal length gradually extends, the image smoothly pushes forward, with the telephoto end clearly resolving distant details such as building facades, window frames, tower crane cables, and pulley assemblies — thermal contours are distinct with rich layering. Across the entire zoom range, the image exhibits uniform edge brightness, free from vignetting or dark corners, maintaining consistent sharpness and clarity. The cooled MWIR (3μm–5μm), leveraging its low attenuation characteristics over long distances, delivers high-contrast imaging even under challenging outdoor conditions such as light haze and thermal turbulence, providing reliable long-range identification and target tracking capabilities.

The lens features a compact and lightweight design. The front-surface anti-reflective coating and customizable hard carbon coating balance optical transmission efficiency with field durability. It supports a wide operating temperature range and can be flexibly adapted to scenarios such as UAV payloads and remote fixed monitoring, offering reliable support for 24/7 MWIR missions including urban security and construction site inspection. More real-world footage will be continuously updated. For detailed specifications or customization requests, please contact us via our official website.

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