Hikvision DS-2CD2146G2-ISU 4MP IP Dome Network Camera New AcuSense Technology with mic
- 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)
The Hikvision DS-2CD2146G2-ISU is a 4 megapixel Vandal Dome camera from the EasyIP 4.0 AcuSense range with an improved algorithm.
With an IP66 weather-resistant housing, a working temperature of -30 °C to +50 °C and an IR range of up to 30m, this camera is ideal for a wide range of outdoor applications.
Effective target classification distances:
2.8mm: 20m
4mm: 25m
Featuring false alarm filtering technology, the DS-2CD2146G2-IU is able to use it's deep learning algorithms to distinguish people and vehicles from other moving targets with up to 80% accuracy.
The DS-2CD2146G2-IU is part of the Acusense series which gives enhancing features such as 3D digital noise reduction (3D DNR), wide dynamic range (WDR) and back light compensation (BLC), allowing high detailed images in ultra-low light environments.
FEATURES:
- 4MP high resolution
- 2.8mm fixed lens
- Powered by Darkfighter for Ultra Low Light
- Up to 30m IR distance
- H.265+ compression
- 4 analytics
- Face Capture
- Smart motion detection
- Internal use
- 120dB wide dynamic range
- Supports on board storage (up to 256GB)
- Built-in microphone for real-time audio security
- Vandal resistant up to IK10
- 12V DC & PoE (802.3af)
