Dahua IPC-HFW1839TCP-A-IL-0280B-S6-QH – 8MP Smart Dual Light Fixed Lens Bullet Network Camera
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-HFW1839TCP-A-IL-0280B-S6-QH – 8MP Smart Dual Light Fixed Lens Bullet Network Camera
The Dahua IPC-HFW1839TCP-A-IL-0280B-S6-QH is a high-performance 8MP network bullet camera that combines ultra-high-definition imaging with intelligent monitoring features. Equipped with a 1/2.7" CMOS image sensor, the camera captures detailed video at resolutions up to 3840 × 2160, providing excellent image clarity and enhanced identification capabilities across a wide surveillance area. Featuring Dahua Smart Dual Light technology, the camera intelligently switches between infrared illumination and warm white light based on detected activity. During normal night-time operation, infrared illumination provides discreet monitoring. When a human target is detected, the warm light activates to record full-colour video, helping to improve identification and evidence collection while reducing unnecessary light pollution. Advanced image enhancement technologies including DWDR, 3D Noise Reduction, Backlight Compensation (BLC) and Highlight Compensation (HLC) ensure consistent image quality in challenging lighting environments. The integrated microphone captures audio alongside video, providing additional situational awareness and supporting more comprehensive incident investigation.
KEY FEATURES
- 8MP Ultra HD resolution (3840 × 2160)
- 1/2.7" progressive CMOS image sensor
- Fixed 2.8 mm lens
- Smart Dual Light technology
- Up to 30 m infrared illumination
- Up to 30 m warm light illumination
- Built-in microphone for audio recording
- Smart H.265+ and Smart H.264+ compression
- Intelligent human detection
- DWDR, 3D NR, HLC and BLC image enhancement
- ROI (Region of Interest) support
- ONVIF compatible
- PoE (IEEE 802.3af) support
- IP67 weatherproof protection
- Suitable for residential, retail and commercial installations
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