Dahua IPC-HFW1639TCP-A-IL-0280B-S6-QH – 6MP 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-HFW1639TCP-A-IL-0280B-S6-QH – 6MP Smart Dual Light Fixed Lens Bullet Network Camera
The Dahua IPC-HFW1639TCP-A-IL-0280B-S6-QH is a versatile 6MP network bullet camera that combines high-resolution imaging with intelligent monitoring features. Equipped with a 1/2.7" CMOS sensor, it delivers detailed video at resolutions up to 3200 × 1800, ensuring clear identification of people and objects across a wide surveillance area. Featuring Dahua Smart Dual Light technology, the camera automatically switches between infrared and warm white illumination according to detected activity. Under normal conditions, IR illumination provides discreet monitoring, while warm light activates when a person is detected, enabling full-colour recording of important events and improving identification accuracy. Advanced image enhancement technologies including DWDR, 3D Noise Reduction, HLC and BLC ensure consistent image quality in challenging lighting conditions. The built-in microphone captures audio alongside video, providing additional situational awareness and evidence collection.
KEY FEATURES
- 6MP resolution (3200 × 1800)
- 1/2.7" progressive CMOS image sensor
- Fixed 2.8 mm lens
- Smart Dual Light technology
- Up to 30 m IR illumination
- Up to 30 m warm light illumination
- Built-in microphone
- Smart H.265+ and Smart H.264+ compression
- Human detection technology
- DWDR, 3D NR, HLC and BLC image optimisation
- ONVIF Profile S and Profile T compatible
- PoE (IEEE 802.3af) support
- IP67 weatherproof protection
- Suitable for residential and commercial surveillance applications
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