AXIS 5503-171 9-40mm Theia Varifocal Telephoto Zoom Lens, F1.7

Ideal for long-range security and covert monitoring, the AXIS 5503-171 Theia 9–40mm varifocal telephoto lens from Axis Communications delivers crisp, high-resolution imaging where detail matters most. The 9–40mm focal range (4.4x optical) and fast f/1.7 aperture boost light-gathering ability for clearer footage in low-light environments, while IR-corrected optics maintain sharp focus both day and night. Supporting P‑Iris and DC‑Iris control, this varifocal lens optimizes depth of field and contrast on multi-megapixel cameras (compatible up to 5 MP), allowing you to fully leverage modern HDTV and surveillance sensors.

Its compact telephoto design simplifies installation in discreet security enclosures and fixed mounts, enabling reliable monitoring of parking lots, perimeters, and critical infrastructure from a distance. With digital magnification capability for investigative zoom-ins, the AXIS 5503-171 is built for integrators and security teams who need dependable image quality for recording, live surveillance, and forensic review. Upgrade your security camera setup with this high-performance varifocal lens for improved monitoring and evidence capture—order now to enhance your surveillance deployment.

• Capture distant detail with a 9–40mm telephoto range for unobtrusive perimeter surveillance
• Fast f/1.7 aperture and IR‑corrected optics deliver clear images in low light and day/night monitoring
• Supports P‑Iris and DC‑Iris for precise depth-of-field and optimal image contrast on megapixel cameras
• Compact, high-resolution varifocal design maximizes image quality from HDTV and multi‑megapixel sensors
• Compatible with CS-mount cameras (up to 5MP) and offers up to 4.4x optical zoom plus digital magnification for investigative clarity