Vivotek AL-247 2.8-8mm Varifocal Lens F1.2 P-Iris
The Vivotek AL-247 is a professional varifocal lens engineered for IP surveillance cameras with 1/3" sensors. Combining a versatile 2.8-8mm focal range with a bright F1.2 aperture and intelligent P-Iris control, this lens delivers flexible framing, superior light capture, and precise iris management across diverse lighting conditions. Built for installations requiring variable zoom without motorization constraints, the AL-247 is ideal for retail, office, and perimeter monitoring applications where field-of-view adjustability is essential.
Key Features
- Varifocal 2.8-8mm Focal Length: Manual zoom adjustment provides wide-angle to medium telephoto coverage, accommodating multiple scene requirements without camera relocation
- F1.2 Maximum Aperture: Exceptionally bright lens design maximizes light transmission, enabling clear imaging in low-light and variable lighting environments
- P-Iris Control: Precision iris mechanism enhances contrast, sharpness, and depth-of-field consistency by automatically adjusting aperture based on lighting and scene content
- 1/3" Sensor Optimization: Optically matched to Vivotek 1/3" sensor cameras for superior corner sharpness, minimal distortion, and consistent performance
- Rugged Construction: Durable mechanical design withstands indoor and outdoor environmental demands
Technical Specifications
- Focal Length: 2.8-8mm varifocal
- Sensor Compatibility: 1/3" format
- Maximum Aperture: F1.2
- Iris Type: P-Iris (motorized precision control)
- Form Factor: Varifocal lens module
- Supported Platforms: Vivotek IP cameras with 1/3" sensors and P-Iris support
Applications
The AL-247 excels in retail surveillance, office building monitoring, warehouse overviews, and outdoor perimeter protection. The variable zoom capability allows operators to capture wide entrance/exit views or zoom to identify details without repositioning hardware. P-Iris ensures consistent image quality across shifting daylight and artificial lighting transitions.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The AL-247 addresses a critical need in fixed-camera surveillance: flexible framing without motorized lens complexity. The F1.2 aperture is exceptionally bright for a varifocal lens, enabling performance in challenging low-light scenes where fixed f/2.0 lenses struggle. P-Iris integration is particularly valuable—it automatically optimizes iris position to maintain edge-to-edge sharpness and contrast consistency, reducing manual calibration and improving image consistency during dynamic lighting changes.
The 2.8-8mm range (approximately 2.9x zoom) balances versatility with optical quality; wider ranges typically introduce greater distortion. For Vivotek ecosystem users, this lens represents a cost-effective alternative to motorized zoom cameras when scene coverage flexibility is needed at a single mounting point.
