ACTi I27 vs ACTi Z952: Specification Comparison
Both the ACTi I27 and ACTi Z952 are 4MP IP cameras with optical zoom and PoE 802.3af power, aimed at applications requiring long-range detail capture — license plates, perimeter intrusion, and wide-area surveillance. The I27 is a fixed box camera with 30x optical zoom intended for ceiling or wall mount, while the Z952 is an outdoor-rated speed dome with 25x motorized zoom and full PTZ movement. Buyers evaluating these are typically choosing between a discreet fixed-zoom installation and a motorized pan-tilt-zoom deployment in a harsh outdoor environment.
In This Guide
How do the imaging specs compare?
Both cameras deliver 4MP resolution. The I27 uses a 30x optical zoom lens with no focal length range specified in the provided specs, while the Z952 specifies a 4.8–120 mm focal length at 25x optical zoom with an aperture range of F1.5–3.8. The Z952's F1.5 maximum aperture is a meaningful low-light advantage, as it allows more light to reach the sensor at wide-angle settings. The I27's 30x zoom ratio slightly exceeds the Z952's 25x, which may matter for fixed long-range targets where maximum reach is the priority.
On WDR, the I27 is listed as Advanced WDR, while the Z952 is listed simply as WDR — suggesting the I27 may have a higher-grade dynamic range processing pipeline, though no numerical WDR values (e.g., dB) are provided in the specs for either model. Both cameras include IR night vision and Day/Night functionality. The Z952 additionally lists Adaptive IR, which adjusts IR intensity to prevent overexposure as subjects approach the camera — a useful feature in PTZ applications where the working distance changes dynamically. No minimum illumination figures are provided for either model in the supplied specs.
What about installation and environment?
The Z952 carries IP66 and IK10 ratings, confirming resistance to dust ingress, high-pressure water jets, and 20-joule impact — making it suitable for exposed outdoor locations subject to weather and vandalism. The I27 has no IP or IK rating listed in the provided specs, which means its environmental suitability for outdoor or wet-area installation cannot be confirmed from available data. Installers should verify housing ratings with ACTi before deploying the I27 in unprotected outdoor environments.
Both cameras are powered by PoE 802.3af over a single Ethernet run, eliminating the need for a separate power circuit. The I27 supports ceiling and wall mounting in a box form factor. The Z952 is a dome-form speed dome with pan-tilt motorized movement, requiring a ceiling or pendant mount appropriate for PTZ housings. No operating temperature ranges are specified for either model in the provided data. The Z952 includes onboard MicroSD storage; the I27 does not list local storage in its specs.
Which fits your VMS and analytics better?
The Z952 explicitly lists ONVIF compliance, which ensures interoperability with the broad ecosystem of ONVIF-conformant VMS platforms without requiring a proprietary driver. The I27 does not list ONVIF support in its provided specs — buyers relying on ONVIF-based VMS integration should confirm compatibility with ACTi before specifying the I27. The Z952 also lists an audio input, enabling microphone attachment for two-way audio or audio-triggered recording workflows; the I27 does not list any audio capability in its specs.
The Z952 includes MicroSD edge storage, supporting local recording as a buffer or failover when network connectivity is interrupted. The I27 has no edge storage listed. Video compression is specified for the Z952 as H.265 and H.264 dual-codec, which directly affects storage and bandwidth budgeting — H.265 typically halves storage requirements versus H.264 at equivalent quality. The I27's supported compression codecs are not listed in the provided specs. The Z952 lists a maximum frame rate of 30 fps; no frame rate figure is provided for the I27.
Which should you choose: the I27 or the Z952?
Our take: The Z952 is the stronger choice when the deployment is outdoors, requires PTZ coverage, or demands confirmed VMS interoperability via ONVIF. Its IP66/IK10 housing makes it the only option of the two with documented weather and vandalism resistance. Its ONVIF certification, H.265/H.264 dual-codec, onboard MicroSD storage, audio input, and Adaptive IR represent a richer feature set for demanding outdoor installations. The I27 holds an edge in raw zoom ratio — 30x versus the Z952's 25x — and is listed with Advanced WDR versus the Z952's unqualified WDR, which may indicate superior dynamic range processing. The I27 is better suited to indoor or controlled-environment fixed-zoom applications where maximum optical reach and potentially higher-grade WDR matter more than PTZ movement or weatherproofing. Buyers should note that the I27's compression format, frame rate, ONVIF status, and IP rating are absent from available specs and must be confirmed with ACTi before finalizing a specification.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | ACTi I27 | ACTi Z952 |
|---|---|---|
| Resolution | 4 MP | 4 MP |
| Form Factor | Box | Dome (Speed Dome) |
| PTZ / Movement | Fixed (ceiling/wall mount) | Pan-tilt motorized |
| Lens / Focal Length | 30x optical zoom (focal length not specified) | 4.8–120 mm, 25x optical zoom |
| Max Aperture | — | F1.5 |
| IR Night Vision | IR | IR; Adaptive IR |
| Day/Night | Day/Night | Day/Night |
| WDR | Advanced WDR | WDR |
| Max Frame Rate | — | 30 fps |
| Video Compression | — | H.265; H.264 |
| Power Input | PoE (802.3af) | PoE (802.3af) |
| IP Rating | — | IP66 |
| IK / Impact Rating | — | IK10 |
| ONVIF | — | Yes |
| Audio | — | Audio input |
| Edge Storage | — | MicroSD |
Frequently Asked Questions
Which should you choose: the I27 or the Z952?
The Z952 is the stronger choice when the deployment is outdoors, requires PTZ coverage, or demands confirmed VMS interoperability via ONVIF. Its IP66/IK10 housing makes it the only option of the two with documented weather and vandalism resistance. Its ONVIF certification, H.265/H.264 dual-codec, onboard MicroSD storage, audio input, and Adaptive IR represent a richer feature set for demanding outdoor installations. The I27 holds an edge in raw zoom ratio — 30x versus the Z952's 25x — and is listed with Advanced WDR versus the Z952's unqualified WDR, which may indicate superior dynamic range processing. The I27 is better suited to indoor or controlled-environment fixed-zoom applications where maximum optical reach and potentially higher-grade WDR matter more than PTZ movement or weatherproofing. Buyers should note that the I27's compression format, frame rate, ONVIF status, and IP rating are absent from available specs and must be confirmed with ACTi before finalizing a specification.
Is the I27 or Z952 better for low-light performance?
Based on available specs, the Z952 has a documented advantage: its lens opens to F1.5 at wide angle, admitting more light than an unspecified aperture on the I27. The Z952 also lists Adaptive IR, which adjusts intensity as subject distance changes during PTZ movement. The I27 lists Advanced WDR, which may indicate stronger dynamic range handling in mixed-light scenes, but no minimum illumination figures are provided for either model in the supplied specifications.
Can I mount the I27 or Z952 outdoors?
The Z952 is rated IP66 (dust-tight, high-pressure water resistant) and IK10 (20-joule impact resistant), confirming it for exposed outdoor use. The I27 has no IP or IK rating listed in its provided specifications. Until ACTi confirms an outdoor-rated housing for the I27, it cannot be specified for unprotected exterior installations based on available data.
Which camera works with more VMS platforms?
The Z952 lists explicit ONVIF support, which provides broad compatibility with VMS platforms that implement the ONVIF standard. The I27 does not list ONVIF compliance in its provided specs. Buyers integrating with an ONVIF-based VMS should confirm I27 driver availability with ACTi before specifying it, or default to the Z952 where ONVIF compliance is required.
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