HIKVISION DS-2CE5AH0T-VPIT3ZE(C) Motorized Varifocal 5MP Vandal Dome Camera with POC 2.7mm to 13.5mm
- 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)
Power over Coax camera.
Power over Coaxial (PoC) basically means that power for the camera is supplied by the DVR via coaxial video cable (RG59 or similar), this removes the requirement for separate cables and power supplies which would otherwise be needed to power your cameras. For installers, this means a much more time and cost-efficient
installation.
PoC can be used on cable runs up to 200 metres and is available in 4,8 and 16 channel DVRs (models ending /P), a full complement of TVI PoC cameras are also available (models ending E) which together offer a cost effective and time saving solution to your TVI installations.
PLEASE NOTE: All PoC cameras can also work on non PoC recorders
1. All PoC capable TVI cameras can be powered locally via a separate power supply allowing them to be used on a none PoC TVI DVR
2. All none PoC TVI cameras can work on a PoC capable TVI DVR as the camera is powered via a separate power supply and PoC will
only transmit when requested to by a compatible camera
3. PoC transmission has generally been used through RG59 coaxial or similar cable but can now be used with a POC balun and ethernet
- 5MP high performance CMOS
- Adopts HD-TVI technology
- 2.7mm to 13.5mm varifocal lens
- True day/night
- OSD menu
- Smart IR
- EXIR technology
- Up to 40m IR distance
- Internal use
- Up the Coax telemetry
- Digital wide dynamic range
- Vandal resistant up to IK10
- PoC.af
- 12V DC
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