Hikvision DS-2CD2346G3D-IZ2UY/SL(2.8/4mm) 4 MP Dual-Lens Fixed Point Zoom Turret Network Camera
- CCTV Lens Guide
- Hard Drive Size Guide
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, frame rate settings, and whether you have H.265 encoding enabled or not to save space (We advise turning it on to double the capacity shown below with ease).
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 (to perhaps double or more these figures again).
|
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 2 Terabytes for a 4 x 4/5MP HD camera setup, as this should give you approx 2 weeks using H.265 @ 20fps and that is on continuous, not motion-detected recording.
(You may only require the full 25 frames per second on certain cameras if things are fast-moving - ie above a till)
You can also use the Hikvision online calculator to work out what works best for you specifically: https://tools.hikvision.com/ca...
(All of our hard drives come fitted and are CCTV-specific from one of the major brands)
Hikvision 4 MP Dual-Lens Fixed Point Zoom Turret Network Camera
This advanced 4 MP Dual-lens Fixed Point Zoom Turret Network Camera delivers versatile monitoring, exceptional low-light performance, and intelligent detection in a compact, installation-friendly design. With two independent channels, dual focal lengths, and powerful deep-learning analytics, it provides broad-area awareness and detailed close-up coverage using just one IP address and one cable.
Key Features
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Dual-Lens Architecture: Two independent channels (2.8 mm & 4 mm) combined in one camera, enabling simultaneous wide-angle and point zoom views with a single wiring connection.
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Point Vari-Focal Design: Seamlessly blends the benefits of fixed and zoom lenses for flexible monitoring of both near and mid-range targets.
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Powered by DarkFighter: Exceptional low-light image quality with enhanced clarity, color, and detail in dark environments.
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Durable, User-Friendly Build: Innovative interpolated structure with highly waterproof construction and anti-corrosion NEMA 4X design for long-term reliability in harsh conditions.
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Active Deterrence: Integrated strobe light and audio alarm provide real-time visual and audible warnings to help deter intruders.
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AI Target Classification: Deep-learning algorithms accurately distinguish between people and vehicles, reducing false alarms and improving detection accuracy.
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Crystal-Clear Audio: Equipped with an arrayed dual-microphone system for high-quality sound pickup and improved situational awareness.
