Hold detail across changing scenes with a CS-mount lens designed for 5 MP surveillance imaging. The 9-40 mm focal range gives integrators room to frame entrances, aisles, and perimeter zones without changing the camera position, while the 1/2.5-inch format aligns with compact security platforms. IR correction matters when cameras move from visible light to infrared illumination. This lens is built to help maintain focus behavior under IR conditions, reducing the softening that can appear in night monitoring. That makes it a practical choice for systems that need usable images after dark, not just acceptable daytime footage. For projects where camera placement is fixed but the field of view must be tuned precisely, this lens offers a straightforward way to match coverage to the scene. It is suited to professional CCTV environments where image quality, optical control, and long-term deployment consistency justify a higher-spec lens over basic fixed-focal alternatives.