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)
Hikvision
This all new Hiwatch from Hikvision Turbo Analogue kit delivers stunning 2/3 Megapixel images (3 Megapixel on the first channel only, 1080P on the others) at a staggeringly low price point with the reliability and support Hikvision products have become known for. Able to run over traditional coaxial cabling, this new kit is the perfect solution for those looking to upgrade an ageing analogue solution, or for those who are simply looking to do a fresh install of high quality CCTV at a great price point.
All Hikvision cameras in this bundle feature
- 3 megapixel high perfomance CMOS sensors
- Day/Night switch
- Digital noise reduction
- IP 66 weatherproof
- Available in 2.8, 3.6, or 6mm lenses
- 12 V DC±15%
- IR Range Up to 40 m
- Field of view : 92° (2.8 mm),70.9° (3.6 mm), 56.7° (6 mm)
Hikvision 200Q series DVR features
- Connectable to Turbo HD, AHD, HDCVI and analog cameras
- Up to 1-ch 1080p IP cameras input
- Long distance transmission over UTP and coaxial cable
- One-key enable H.264+ compression to improve encoding efficiency by up to 50% and reduce data storage costs
- Up to 3 MP resolution for recording of the first channel of DVR-204Q-F1, the first 2 channels of DVR-208Q-F1, and the first 4
channels of DVR-216Q-F1 - Simultaneous HDMI/VGA output at up to 1920 × 1080 resolution for DVR-204Q/208Q-F1 and 4K (3840 × 2160) resolution for
HDMI output of DVR-216Q-F1 - One SATA interface (up to 6 TB capacity per HDD)
- 4/8-ch synchronous playback
- Smart search for efficient playback
- VQD (Video Quality Diagnostics)
- Unlock pattern for device login for the admin and clear-text password available
- GUID file can be exported for password resetting
- Supports PTZ control via Omnicast VMS of Genetec protocol
- Hik-Connect & DDNS (Dynamic Domain Name System) for easy network managemen
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