Axis 5800-781 Fujinon CS-Mount 2.2-6mm DC-Iris Varifocal Lens
The Axis 5800-781 is a Fujinon CS-mount varifocal lens covering a 2.2–6mm focal range with DC-iris control — purpose-matched to Axis box cameras that require a separately sourced lens. If you're deploying an AXIS P1353, P1354, P1355, P1357, Q1602, Q1604, or their -E outdoor variants, this is a qualified, IR-corrected option that avoids the focus shift problems you'll hit with standard (non-IR) glass. The 5800-781 (often searched as 5800 781) ships in white, consistent with the finish of the Axis camera bodies it targets.
Key Features
- 2.2–6mm Varifocal Range: Covers wide-angle entry coverage at 2.2mm through moderate telephoto at 6mm — roughly a 2.7× optical range. This lets you dial in field of view on-site without swapping lenses, which matters on installations where the exact mounting point isn't confirmed until walk-through day.
- DC-Iris Control: Iris aperture is adjusted electronically by the camera body, not manually. In scenes with changing ambient light — a lobby with exterior glazing, a loading dock with roll-up doors — DC-iris maintains consistent exposure without you touching the lens after commissioning. Pair this only with cameras that have a DC-iris output connector; the compatible Axis models listed all do.
- IR-Corrected Optics: Standard glass focuses visible and infrared light at slightly different depths, causing images to go soft when IR illumination kicks in at night. IR-corrected glass brings both wavelengths to the same focal plane, so your night footage stays sharp without refocusing. Essential if any of the cameras in this deployment run IR illuminators.
- CS-Mount: The CS-mount is the standard short-flange-distance format for Axis box cameras in this family. Correct mount type matters — a C-mount lens on a CS-mount body needs a 5mm adapter ring; using the wrong mount without compensation puts your focal plane in the wrong place entirely. The 5800-781 is native CS, no adapter required on the listed compatible bodies.
- Verified Camera Compatibility: Factory-qualified for AXIS P1353/-E, P1354/-E, P1355/-E, P1357/-E, Q1602/-E, and Q1604/-E. Buying a lens outside the verified compatibility list for a box camera is a common source of image quality complaints — this one removes that variable.
- White Housing: Matches the body color of the Axis P- and Q-series box cameras it's designed for. Minor detail on a mechanical part, but relevant on retail, hospitality, or commercial interior deployments where visible hardware aesthetics matter.
Integration and Compatibility
The 5800-781 is designed specifically for the Axis P13 and Q16 box camera families. These cameras accept CS-mount lenses and provide a DC-iris control line on the lens connector. The 2.2–6mm focal range suits indoor environments — retail floors, corridors, small lobbies — where a fixed lens would force a choice between too wide or too narrow. For longer distances or tighter telephoto needs (parking structures, perimeter walls), consider a longer focal length in the Axis lens family. For outdoor deployments using the -E variants, the IR correction becomes especially relevant given night-mode operation. Browse the full range of IP cameras and camera lenses to compare options for your specific scene geometry. If you're planning a multi-camera deployment, a PoE switch sizing guide and a network video recorder selection will complete the system.
Frequently Asked Questions
Q: What cameras is the Axis 5800-781 compatible with?
A: The 5800-781 is factory-qualified for the AXIS P1353, P1353-E, P1354, P1354-E, P1355, P1355-E, P1357, P1357-E, Q1602, Q1602-E, Q1604, and Q1604-E.
Q: Is the 5800-781 a C-mount or CS-mount lens?
A: CS-mount. The compatible Axis box cameras in the P13 and Q16 families use CS-mount natively, so no adapter is required.
Q: Why does IR correction matter for this lens?
A: Without IR correction, the lens focuses visible and infrared light at different depths. When a camera switches to IR night mode, the image softens. IR-corrected glass keeps both in focus simultaneously, giving you sharp footage around the clock.
Q: What does DC-iris mean and do all Axis box cameras support it?
A: DC-iris means the aperture is controlled by an electronic signal from the camera body rather than a manual ring. The Axis P1353, P1354, P1355, P1357, Q1602, and Q1604 all provide a DC-iris connector, so this lens integrates correctly with those models.
Q: Can the 5800-781 be used on non-Axis cameras?
A: Mechanically, any CS-mount camera body with a DC-iris output could accept this lens. However, the verified compatibility list covers only the Axis P13 and Q16 families. Performance on other bodies is not confirmed by the manufacturer.
The 5800-781 occupies a specific niche: it's the lens you spec when you're deploying Axis P13 or Q16 box cameras in variable-light interior scenes and you need DC-iris response without chasing down a third-party lens that may or may not be IR-corrected. The 2.2–6mm varifocal range is the practical sweet spot for most indoor coverage problems on those bodies.
Technical Highlights:
- Varifocal 2.2–6mm Range: Roughly 2.7× optical adjustment on-site — enough to compensate for mounting point changes without ordering a second lens SKU.
- DC-Iris: Camera-controlled aperture keeps exposure consistent in mixed or changing ambient light, removing a manual adjustment variable after commissioning.
- IR-Corrected Glass: Eliminates night-mode focus shift on cameras running IR illumination — a non-negotiable spec if any deployment phase involves after-dark coverage.
Deployment Considerations:
- Verify the target camera body has a DC-iris connector populated before ordering — the P13 and Q16 series do, but always confirm against the specific unit's hardware revision.
- The 2.2–6mm range tops out at a moderate telephoto; if your scene requires tight framing at distance (beyond roughly 10–15m on a standard sensor), you'll need a longer focal length from the Axis lens lineup.
This lens is the right call for retail interiors, reception areas, and indoor access corridors where the P1355 or Q1604 series is already specified and DC-iris auto-exposure control is a requirement.
