Dahua IPC-HDW5842TP-ZE-2712-ATC-S3 8MP WizMind AI Varifocal Eyeball Network Camera (2.7–12mm, Smart IR 50m, Advanced Analytics, IP67/IK10)
Unless selecting a vari-focal camera (with an adjustable lens) It is important to select the correct camera lens option for where the camera is to be positioned. A smaller lens will give you a wider angle but will be "zoomed out more", while a bigger lens will narrow the angle down and "zoom in more". See below to give you some idea on angles of Megapixel HD Cameras:
| Lens in mm | Approx Viewing Angle (degrees) | Ideal Distance (metres) | Typical usage/notes |
|---|---|---|---|
| 2.8 | 106 | <6 | For seeing as much of the immediate area as possible such as above a doorway/low down/garage soffits (edges can appear slightly warped/distorted) - clearly "zoomed out" |
| 3.6/4 | 83-90 | <12 | A great general purpose option giving great coverage still in the corner of a room or higher up on second floor soffits with less distortion - more of a natural "zoom" |
| 6 | 56 | 6-20 | Narrows down the angle and zooms in to look past the immediate area a little to gain more detail - down a driveway for example from higher up |
| 12 | 24 | 20+ | Zooms in significantly more to look at a gate, entrance or adjascent building |
| 16 | 19 | 24+ | As above but more so |
The amount of hard drive space you require is dictated by how many cameras, as well as their resolution and frame rate settings. Finally you can often make your storage space last a lot longer by enabling motion detected recording rather than continuous, especially if there are long periods of no activity.
|
Resolution (Megapixels) |
Days of storage provided by 1TB per camera (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (50% motion- 15 frames per second) |
|---|---|---|---|
| 1 | 44 | 11 | 36 |
| 2 | 22 | 5 | 18 |
| 3 | 17 | 4 | 14 |
| 4 | 11 | 3 | 9 |
| 5 | 9 | 2 | 8 |
| 6 | 8 | 2 | 6 |
| 8 (4K) | 5 | 1 | 4 |
| 12 | 4 | 0.5 | 3 |
As a rule of thumb we recommend a minimum of 2 Terabytes per 4 x 2-4MP HD cameras, as this should give you 2 weeks to a month with a few adjustments on motion detected recording. You may only require the full 25 frames per second on certain cameras if things are fast moving.
(All of our hard drives come fitted and are CCTV specific from one of the major brands)
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Dahua IPC-HDW5842TP-ZE-2712-ATC-S3 8MP WizMind AI Varifocal Eyeball Network Camera (2.7–12mm, Smart IR 50m, Advanced Analytics, IP67/IK10)
The Dahua IPC-HDW5842TP-ZE-2712-ATC-S3 is a high-performance 8MP intelligent surveillance camera from the WizMind series, designed for advanced security environments requiring high image quality and deep-learning analytics. It is equipped with a 1/1.8” progressive CMOS sensor, delivering ultra-HD resolution up to 3840 × 2160 (4K). The larger sensor ensures improved low-light sensitivity and better image detail compared to standard surveillance cameras. A key feature of this model is its motorized varifocal lens (2.7–12mm), allowing remote adjustment of zoom and focus after installation. This provides flexibility to cover wide areas or focus on specific zones without physical intervention. The camera supports advanced WizMind AI functions, including face detection, people counting, queue management, and heat map generation for business intelligence. It also provides intelligent perimeter protection such as intrusion detection, tripwire crossing, loitering detection, and abandoned/missing object detection.
KEY FEATURES
- 8MP Ultra HD (3840 × 2160) resolution
- 1/1.8” progressive CMOS sensor
- Motorized varifocal lens (2.7–12mm)
- Remote zoom and focus adjustment
- WizMind AI analytics platform
- Face detection and attribute analysis
- People counting and queue management
- Heat map generation (retail/business analytics)
- Perimeter protection (intrusion, tripwire, loitering)
- Abandoned/missing object detection
- Smart IR night vision up to 50m
- True WDR for high-contrast scenes
- AI Scene Self-Adaptation (SSA)
- 3D noise reduction (3D NR)
- HLC, BLC, defog functions
- Smart H.265+ / AI H.265 compression
- Built-in microphone (variant dependent)
- MicroSD support up to 512GB
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