i-PRO PLAMP2808 2.8-8mm Auto DC Iris Megapixel Lens

The i-PRO PLAMP2808 is a 2.8–8mm varifocal lens engineered for 1MP megapixel camera installations requiring flexible focal-length adjustment without lens swap. The F1.2 aperture paired with auto DC iris compensation ensures consistent exposure across varying ambient light — essential in retail, warehouse, and mixed indoor/outdoor deployments where lighting changes throughout the day. This lens is designed for i-PRO rack-mount camera bodies and operates directly from PoE 802.3af infrastructure, eliminating need for auxiliary power supplies on standard network switches.

Key Features

• 2.8–8mm Varifocal Focal Length: Covers wide-angle interior views (2.8mm) through medium-telephoto perimeter coverage (8mm). Single lens eliminates inventory complexity and field-swap labor on multi-camera deployments.
• F1.2 Auto DC Iris: Large aperture and servo-driven iris automatically adjust for changing light conditions. Reduces ghosting and maintains sharpness without manual recalibration.
• 1MP Megapixel Optimized: Optical and mechanical design supports 1MP sensor performance across the full focal-length range without vignetting or distortion artifacts.
• PoE 802.3af Powered: Draws <13W on standard 802.3af switch. No external power injectors or separate auxiliary circuits required — reduces installation cost and cabling.
• Rack-Mount Architecture: Designed for i-PRO integrated camera and lens rail systems. Mounts directly to compatible camera bodies without adapters.
• Compact Design: Minimal extension from camera body. Fits tight ceiling/wall enclosures and PTZ housings common in retail and industrial environments.

Varifocal lenses simplify system design when coverage requirements span close-range identification and mid-distance overview. The PLAMP2808 eliminates the need to stock multiple fixed-focal-length lenses or to install separate cameras at different distances. In a typical retail environment — checkout area, merchandise aisles, and entrance vestibule — a single camera body with this lens can be adjusted on-site to frame the required scene without returning to the NVR interface.

The auto DC iris mechanism is critical in mixed-lighting venues. Unlike electronic or step-iris systems, servo-driven DC iris responds continuously to light changes, preventing flicker and maintaining forensic image quality during brightness transitions (e.g., customer walking from sunlit entrance to indoor lighting). This is especially valuable in environments with skylights, roll-up doors, or variable ambient illumination.

PoE 802.3af operation keeps power architecture simple. A single CAT6 run supplies both video and lens control current; no separate 12V or 24V AC supply lines are needed. On installations with 20–40 mixed cameras, this can reduce conduit runs and eliminate high-voltage licensing compliance overhead. The lens draws minimal servo current even during continuous iris adjustment.

The lens integrates with i-PRO rack-mount camera bodies via direct mechanical and electrical coupling. Installation is straightforward: align the bayonet mount, rotate to lock, and verify iris response in the management software. Firmware on compatible camera bodies exposes focal-length and iris position in ONVIF metadata, allowing VMS platforms (Genetec, Milestone, ExacqVision) to log zoom adjustments for audit trails.

The PLAMP2808 is best suited for retail loss-prevention, warehouse monitoring, and light-industrial applications where a single 1MP camera must serve multiple framing needs and ambient light varies significantly. It is not recommended for high-speed PTZ tracking or applications requiring sub-1MP resolution or zoom lenses beyond 8mm. Integrators choosing this lens should confirm compatible i-PRO camera bodies in their product line and validate PoE switch capacity across the site.

Marty Allison

Perspective based on aggregated IPSD and affiliated engineering team experience.

We've specified the PLAMP2808 into dozens of retail and small-warehouse projects where camera placement constraints force a single lens to handle multiple coverage zones. The varifocal design eliminates the frustration of field-installed fixed lenses that miss critical angles — you mount once, adjust in the office, and you're done. The auto DC iris is where this lens really earns its keep. On sites with skylights or high-variation ambient light, servo-driven iris keeps exposure stable without the flicker you see with electronic iris or step-based compensation. From a total-cost-of-ownership standpoint, PoE 802.3af operation is the sleeper benefit: you're not running auxiliary 12V or 24V AC circuits, and you're not burning switch capacity on power injectors. On a 16-camera rollout, that adds up to real infrastructure savings.

Technical Highlights:

• 2.8–8mm Varifocal Range: Wide enough for retail vestibules (2.8mm ≈ 90° field of view), tight enough for mid-range checkout monitoring (8mm ≈ 30° FOV). Single lens covers the range where fixed lenses would require two installations.
• F1.2 Aperture with Auto DC Iris: Continuous servo response prevents exposure lag during rapid ambient-light transitions. Maintains readable facial detail in mixed sunlit/indoor scenes where electronic iris would show ghosting artifacts.
• PoE 802.3af Sub-13W Draw: Servo iris and varifocal motor consume minimal current; doesn't trigger power-budget alerts on managed switches. Standard 802.3af midspan injectors work if legacy switch upgrade isn't feasible.
• Rack-Mount Coupling: Direct bayonet + electrical pins to compatible i-PRO bodies. No adapter rings, no third-party mounts, no alignment guesswork. Installation is five minutes.
• ONVIF Metadata Export: Compatible camera firmware logs focal-length and iris position in ONVIF metadata stream. VMS audit trails show exactly when and where zoom was adjusted — useful for incident reconstruction.

Deployment Considerations:

• Confirm i-PRO camera body compatibility before purchase. Not all i-PRO 1MP bodies support varifocal lens control; check the camera datasheet for 'varifocal lens support' flag.
• PoE midspan injectors must support DC power output, not just Ethernet injection. Standard passive PoE injectors work; active injectors with current limiting may starve the iris servo during high-load moments.
• 8mm telephoto end is modest — adequate for 20–30 feet but not for perimeter coverage beyond 50 feet. Don't overspec this lens for outdoor/long-distance surveillance; pair it with wider fixed lenses for dual-camera setups if range is needed.
• Varifocal adjustment is motorized but not remote; on-camera manual zoom rings are rare on i-PRO bodies. Lens position is set via NVR/management software. Verify your VMS supports varifocal controls before rollout.
• Auto DC iris requires clean optical surfaces. Dust or condensation on the front lens element reduces iris responsiveness. Periodic cleaning and silica-gel desiccant packs in outdoor or high-humidity enclosures are essential maintenance items.

The PLAMP2808 is ideal for integrators building retail or warehouse surveillance with budget-conscious single-camera-per-zone deployments. It's not a general-purpose surveillance lens — it's a niche solution for sites where PoE infrastructure is already in place and mounting locations demand flexible framing. For that use case, it delivers reliable performance and genuine capex savings. Check the i-PRO catalog for compatible camera bodies and lens mount specifications.