Vivotek AL-24A 12-40mm P-Iris Lens for IP Cameras
The Vivotek AL-24A is a premium varifocal lens engineered for professional surveillance deployments requiring both wide-area coverage and detailed close-range observation. With its 12–40mm focal range and P-Iris control system, this lens delivers exceptional optical performance across diverse lighting conditions and surveillance scenarios. Designed for 1/2-inch sensor cameras, the AL-24A integrates seamlessly with Vivotek's high-performance IP camera lineup to maximize image clarity and depth of field control.
Key Features
- 12–40mm Varifocal Range: Provides flexible coverage from wide-angle panoramic views to telephoto detail capture, eliminating the need for multiple fixed lenses
- P-Iris Control: Precision iris mechanism ensures optimal depth of field, sharpness, and consistent exposure across varying focal lengths
- F1.8 Bright Aperture: Superior low-light performance enables clear, detailed imaging in challenging lighting environments
- CS-Mount Interface: Industry-standard mount for reliable, tool-free installation and alignment with compatible camera bodies
- 1/2-Inch Image Circle: Optimized optical design for larger-format sensors, delivering superior resolution and image fidelity
- Robust Optical Engineering: Durable construction suitable for indoor and outdoor deployments in demanding security applications
Technical Specifications
- Model: AL-24A
- Focal Length: 12–40mm
- Aperture: F1.8
- Iris Type: P-Iris (Precision Iris)
- Image Circle: 1/2 inch
- Mount Type: CS-Mount
- Part Number: 640022601G
Supported Camera Models
The AL-24A is compatible with the following Vivotek IP camera series: IP9171-HP, IP816A-HP, IP816A-LPC, IP9167-HP, IP9165-HT, IP9165-HP, IP9165-LPC, IP9165-HT-v2, and IP9165-LPC-v2.
Applications
Ideal for critical surveillance environments including government facilities, transportation hubs, large commercial properties, retail spaces, and industrial sites where both situational awareness and forensic detail are essential. The lens excels in mixed-lighting scenarios, from brightly lit indoor corridors to dimly lit perimeter zones.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The AL-24A represents a balanced solution for integrators seeking a single lens capable of handling multi-zone surveillance requirements. The P-Iris mechanism—rather than electronic iris—provides superior mechanical precision and eliminates dependency on camera firmware for iris control, ensuring consistent performance across heterogeneous deployments. The F1.8 aperture is notably bright for a varifocal design, supporting extended depth of field at longer focal lengths while maintaining low-light capability at the wide end.
The 40mm telephoto reach, though modest by PTZ standards, delivers adequate magnification for facial recognition and license plate capture in medium-distance applications (25–40 feet). Integration with Vivotek's 1/2-inch sensor cameras—such as the IP9165 and IP9171 series—maximizes the optical potential; pairing with smaller sensors (1/3 inch or less) will reduce effective field of view and underutilize the lens optics. For integrators, verify CS-mount compatibility and confirm camera support via the compatibility list before specifying.
The robust construction makes it suitable for both climate-controlled indoor installations and weatherproof outdoor housings.
