Axis M4318-PLVE vs i-PRO S4576LA: Specification Comparison
Both the Axis M4318-PLVE and the i-PRO WV-S4576LA are 12-megapixel outdoor fisheye/panoramic dome cameras designed for wide-area surveillance in demanding environments. Each delivers a near-full-hemisphere field of view (182°–183°), IK10 vandal resistance, IP66 ingress protection, and PoE power — making them direct competitors for single-camera 360-degree coverage in retail, transportation, and critical-infrastructure deployments. This comparison evaluates imaging performance, installation requirements, and systems-integration capabilities based strictly on published specifications.
In This Guide
How do the imaging specs compare?
Both cameras use a 12MP CMOS sensor and a near-identical ultrawide lens — the M4318-PLVE at 1.2 mm / 182° and the WV-S4576LA at 1.4 mm / 183°. The Axis sensor is specified at 1/2.3-inch with a maximum resolution of 2992×2992 pixels; i-PRO describes its sensor as 'approx. 1/2 type' without a precise pixel-array dimension in the supplied specs. Frame rate favors the Axis at 25/30 fps (format-dependent) versus 25 fps for the i-PRO. The Axis supports Forensic WDR; the i-PRO specifies WDR on/off with a maximum of 84 dB at level 31 — i-PRO provides a quantified dB figure while Axis does not publish one for this model.
In low light, the M4318-PLVE is rated at 0.19 lux color minimum illumination with Lightfinder technology and OptimizedIR at 850 nm, though no IR range distance is stated. The WV-S4576LA specifies 0.3 lux color and 0.04 lux black-and-white minimums, with IR LED range up to 14 m (45 ft). The Axis therefore has a lower color lux floor, while the i-PRO offers a documented B&W sensitivity figure and a specified IR throw distance — specs not provided for the Axis. Both cameras include built-in IR for day/night switching.
What about installation and environment?
Both cameras share IP66 and IK10 ratings and an operating temperature floor of -40°C. The Axis ceiling is 50°C with IR on; the i-PRO extends to 50°C with IR on and 60°C with IR off, giving it marginally wider thermal headroom in hot enclosures. The i-PRO adds NEMA 4X and Type 4X (UL50) certification — relevant for North American industrial and wet-location compliance — as well as EN50155-TX railway certification and a rated wind resistance of up to 40 m/s (~89 mph). The i-PRO also includes an anti-condensation Rosahl element. None of these additional environmental certifications are listed in the Axis spec sheet.
Power differs in a meaningful way: the Axis requires PoE+ (802.3at), while the i-PRO operates on standard PoE (IEEE 802.3af, PoE Class 0) or DC 12V 1.1A. Installers working with existing 802.3af switches can power the i-PRO without a switch upgrade. Mounting options specified for the Axis include pendant, corner, recessed, and rack; i-PRO mounting accessories are not enumerated in the provided specs. The i-PRO lists a unit mass of 880 g (with plate) or 1.3 kg (with bracket); Axis does not publish weight in the provided spec sheet.
Which fits your VMS and analytics better?
Both cameras support ONVIF Profile G, M, and S. The i-PRO adds ONVIF Profile T. The Axis platform provides an open API (VAPIX) and supports third-party application installation via its open-API framework. Edge analytics on the M4318-PLVE include Deep Learning Processing Unit (DLPU)-based object analytics; specific AI classification categories are not enumerated in the supplied spec. The i-PRO WV-S4576LA specifies AI-VMD, AI People Counting for 360-degree fisheye, AI Privacy Guard, AI Scene Change Detection, and AI Sound Classification covering gunshot, yell, vehicle horn, and glass break — a more detailed analytics feature list is provided.
Audio support is handled differently: the Axis uses portcast technology for I/O connectivity rather than a direct onboard jack, while the i-PRO includes a 3.5 mm stereo mini jack with mic/line input and audio output, plus G.711 (64 kbps) and G.726 (16/32 kbps) compression. Both cameras support microSD local storage. The i-PRO lists 3× alarm inputs and 1× alarm out plus 1× AUX out; the Axis alarm I/O count is not specified in the provided data. Network connectivity on the i-PRO is 10/100Base-T; Axis network speed is not stated in the provided specs.
Which should you choose: the M4318-PLVE or the S4576LA?
Our take: The M4318-PLVE is the stronger choice when your priority is the lowest color lux floor (0.19 lux vs. 0.3 lux), PoE+ infrastructure is already in place, and your VMS ecosystem is built around VAPIX open-API integrations with Axis's edge-analytics platform. The WV-S4576LA is the stronger choice when standard 802.3af PoE power budgets must be preserved, when industrial or railway environmental certifications (NEMA 4X, EN50155-TX) are required, or when out-of-box AI analytics — including named sound classification events and fisheye-native people counting — need to be enabled without additional licensing. The i-PRO also publishes a quantified WDR figure (84 dB), a documented IR throw distance (14 m), and a B&W low-light floor (0.04 lux) that the Axis spec sheet does not include, which matters for commissioning documentation. Choose the Axis in Axis-ACAP VMS environments; choose the i-PRO in Panasonic i-PRO or ONVIF Profile T-dependent deployments with constrained switch infrastructure.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Axis M4318-PLVE | i-PRO S4576LA |
|---|---|---|
| Resolution | 12MP | 12MP |
| Max Frame Rate | 25/30 fps | 25 fps |
| Sensor Size | 1/2.3" | Approx. 1/2 type |
| Focal Length | 1.2 mm | 1.4 mm |
| Horizontal FOV | 182° | 183° |
| Min Illumination (Color) | 0.19 lux | 0.3 lux |
| Min Illumination (B&W) | — | 0.04 lux |
| IR Range | — | 14 m (45 ft) |
| WDR | Forensic WDR | On/Off, max 84 dB |
| Power | PoE+ (802.3at) | PoE 802.3af / DC 12V |
| IP Rating | IP66 | IP66, NEMA 4X |
| Vandal Rating | IK10 | IK10 (50J) |
| Operating Temp (IR on) | -40 to 50°C | -40 to 50°C |
| ONVIF Profiles | G, M, S | G, M, S, T |
| AI Sound Classification | — | Gunshot, Yell, Horn, Glass break |
| Railway Certification | — | EN50155-TX |
Frequently Asked Questions
Which should you choose: the M4318-PLVE or the S4576LA?
The M4318-PLVE is the stronger choice when your priority is the lowest color lux floor (0.19 lux vs. 0.3 lux), PoE+ infrastructure is already in place, and your VMS ecosystem is built around VAPIX open-API integrations with Axis's edge-analytics platform. The WV-S4576LA is the stronger choice when standard 802.3af PoE power budgets must be preserved, when industrial or railway environmental certifications (NEMA 4X, EN50155-TX) are required, or when out-of-box AI analytics — including named sound classification events and fisheye-native people counting — need to be enabled without additional licensing. The i-PRO also publishes a quantified WDR figure (84 dB), a documented IR throw distance (14 m), and a B&W low-light floor (0.04 lux) that the Axis spec sheet does not include, which matters for commissioning documentation. Choose the Axis in Axis-ACAP VMS environments; choose the i-PRO in Panasonic i-PRO or ONVIF Profile T-dependent deployments with constrained switch infrastructure.
Can either camera run on a standard 802.3af PoE switch?
The i-PRO WV-S4576LA is rated for IEEE 802.3af (PoE Class 0) or DC 12V, so it will run on a standard PoE switch. The Axis M4318-PLVE requires PoE+ (802.3at), which delivers up to 30W; installers must confirm their switch ports support 802.3at before deploying the Axis.
Which camera has better built-in analytics out of the box?
Based on the published specifications, the i-PRO WV-S4576LA lists a more detailed analytics set: AI-VMD, AI People Counting for 360-degree fisheye, AI Scene Change Detection, AI Privacy Guard, and AI Sound Classification (gunshot, yell, vehicle horn, glass break). The Axis M4318-PLVE specifies Deep Learning (DLPU) and Object Analytics, but the specific classification categories are not enumerated in the provided spec sheet.
Is either camera certified for use on rail vehicles or in NEMA 4X wet locations?
Yes — the i-PRO WV-S4576LA carries EN50155-TX railway certification and NEMA 4X / UL Type 4X ratings for wet and industrial locations. These certifications are not listed in the Axis M4318-PLVE specification sheet provided.
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