Dahua IPC-HDW3849HP-ZAS-PV-2712-PRO 8MP WizColor TiOC Pro Motorised Varifocal Eyeball IP Camera (2.7–12mm, Active Deterrence, AcuPick AI, Two-Way Audio)
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-HDW3849HP-ZAS-PV-2712-PRO 8MP WizColor TiOC Pro Motorised Varifocal Eyeball IP Camera (2.7–12mm, Active Deterrence, AcuPick AI, Two-Way Audio)
The Dahua IPC-HDW3849HP-ZAS-PV-2712-PRO is a premium 8MP network eyeball camera from Dahua's WizSense 3 Series and TiOC Pro portfolio, engineered for intelligent surveillance, active deterrence, and full-color evidence collection. Equipped with a large 1/1.8" progressive CMOS sensor, the camera captures ultra-high-definition video at up to 3840 × 2160 (4K UHD) resolution, delivering exceptional detail and low-light performance. A key feature of this model is its motorised 2.7–12mm varifocal lens, allowing remote zoom and focus adjustment after installation. This provides flexibility to monitor wide areas or concentrate on distant targets while maintaining image quality. The lens offers a horizontal viewing angle ranging from approximately 112° to 48°, making it suitable for car parks, warehouses, commercial premises, schools, and perimeter security applications. The camera incorporates Dahua's WizColor technology, enabling vivid full-color imaging in extremely low-light environments. Combined with Smart Dual Light, it intelligently switches between infrared illumination and warm white LEDs based on scene activity. Both IR and warm light provide illumination distances of up to 50 metres, ensuring clear night-time monitoring and enhanced deterrence.
KEY FEATURES
- 8MP Ultra HD (3840 × 2160) resolution
- Large 1/1.8" Progressive CMOS sensor
- Motorized 2.7–12mm varifocal lens
- WizColor full-color low-light technology
- TiOC Pro active deterrence system
- Smart Dual Light (IR + Warm White Light)
- Up to 50m IR illumination
- Up to 50m warm light illumination
- Red & blue flashing warning lights
- Built-in siren and customizable voice warnings
- Dual built-in microphones
- Integrated speaker with two-way audio
- AcuPick intelligent target search
- Face detection
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