Dahua IPC-HDW3849QMP-S-IL-0280B 8MP WizSense 3 Series Smart Dual Light Eyeball IP Camera (4K UHD, AI SMD 4.0)
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-HDW3849QMP-S-IL-0280B 8MP WizSense 3 Series Smart Dual Light Eyeball IP Camera (4K UHD, 2.8mm, AI SMD 4.0)
The Dahua IPC-HDW3849QMP-S-IL-0280B is a professional-grade 8MP network eyeball camera from Dahua's WizSense 3 Series, designed to deliver ultra-high-definition surveillance with advanced AI-powered analytics. Equipped with a 1/2.7" progressive CMOS sensor, the camera captures video at up to 3840 × 2160 resolution, providing exceptional image clarity for identification, monitoring, and evidence collection. This model features Dahua's Smart Dual Light technology, which intelligently combines infrared and warm white illumination. During routine monitoring, infrared lighting provides discreet surveillance, while the warm white LEDs automatically activate when a human or vehicle is detected, enabling full-color video recording and enhanced deterrence. Both IR and warm light provide illumination distances of up to 30 meters.
KEY FEATURES
- 8MP Ultra HD (3840 × 2160) resolution
- 1/2.7" Progressive CMOS image sensor
- Fixed 2.8mm wide-angle lens
- Smart Dual Light (IR + Warm White Light)
- Up to 30m IR illumination range
- Up to 30m warm light illumination range
- WizSense AI human and vehicle classification
- SMD 4.0 intelligent motion detection
- Perimeter Protection (Intrusion & Tripwire)
- Built-in microphone
- Smart H.265+ / Smart H.264+ compression
- AI H.265 / AI H.264 encoding
- 120dB True Wide Dynamic Range (WDR)
- AI Scene Self-Adaptation (AI SSA)
- 3D Noise Reduction (3D NR)
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