DORI stands for Detect, Observe, Recognise, Identify. The DORI distance is a general proximity of distance which makes it easy to pinpoint the right camera for your needs.
What is hikvision Dori?
The DORI (detect, observe, recognize, identify) distance gives the general idea of the camera ability to distinguish persons or objects within its field of view. It is calculated based on the camera sensor specification and the criteria given by EN 62676-4: 2015. DORI.
How much distance can a CCTV camera cover?
The C-mount cameras come with a detachable lens, which allows users to change it to fit their needs. For instance, the standard CCTV camera lenses can only cover distances between 35 and 40 feet. With C-mount cameras one can use special lenses, which can cover distances beyond 40 feet.
What is W and T in camera?
These letters refers to zooming depth as follows, W = Wide angle. T = Telephoto.
Whats the zoom lens ratio for a PTZ camera which has 4.3 to 129mm lens?
Full HD 30x Flush PTZ Camera
| Video | |
|---|---|
| Image Sensor | 1/3″ CMOS |
| Lens Type | AF Zoom Lens |
| Focal Length | f=4.3 – 129mm |
| Aperture | F1.6 – 5.0 |
What is IR distance?
The IR distance is the distance from the camera that the infra red LEDs can illuminate. It’s a largely useless number and you will never be able to identify someone at this distance. All cameras that have on board infra red illumination will illuminate objects at the identification distance for the lens fitted.
What is CCTV ppm?
Pixels Per Meter is a measurement used to define the amount of potential image detail that a camera offers at a given distance.A higher PPM value means that the image has more detail capacity.
What is 2400w in camera?
XINJIA Kids Camera?Children’s Mini Digital Camera 2400w Pixels Before and After Dual-Camera 2.4 inch IPS high-Definition Screen. Brand: XINJIA. 2.0 out of 5 stars 1 rating. Price: $42.77.
What is zoom in a camera?
In photographic terms, to zoom in means to make your subject larger in the frame, without actually moving forward yourself (instead, zooming on your lens).Zoom lenses allow you to do this and are incredibly convenient. They allow you to change focal lengths without actually using a different lens entirely.
What does a 50 mm lens do?
The high speed and wide aperture of a 50mm lens can also provide shallow depth of field. This gives you huge creative scope to blur out backgrounds and focus attention on your main subject. 50mm lenses also give attractive out-of-focus highlights (also known as bokeh).
What is the range of PTZ camera?
4MP++ PTZ Camera, Camera Range: UPTO 20 KM
| Brand | PRAMA – MAKE IN INDIA |
|---|---|
| Camera Resolution | 4MP++ |
| Camera Range | UPTO 20 KM |
| Model Name/Number | LONG RANGE PTZ CAMERAS |
| Video Output | Outdoor low-light performance with 4 MP resolution |
How far can PTZ cameras see?
HD sensors with long-range PTZ lenses can provide amazing clarity, even from hundreds of feet away. Check out this example of a PTZ camera with a 3 megapixel sensor and a 40X lens. It can easily capture a license plate at a distance of 650 feet (198 meters).
What is the angle of a CCTV camera?
Wide angle cameras often have field of views between 60 and 110 degrees. More modern smart cameras tend to go beyond 110 degrees to provide a little more coverage. Cameras in this range are the best for smart security cameras, as they provide enough distance and width to cover an entire yard.
How far can a 2mp camera see?
Calculating Distance based on the Camera Lens Angle
You can view the moon which is 238,900 miles (384,400 km) away. Of course you can’t see too much detail at that distance. So how do you calculate the distance based on the detail you want to see. Well, there are a number of ways to do it.
How far can a 2.8 mm lens see?
At 2.8mm you will see an angle of view a little over 100°, but the identification distance will only be around 10 feet. At 12mm you will achieve around a 30° angle of view and identification at around 50 feet.
How far can a 4mm lens see?
the more narrower the lens, the focus is further away. Eg. typical 4mm lens is focus 4-10 metres. typically 2.8mm is 1-6 metres.
How far can a 12mm lens see?
How far can my AvertX camera see?
| Camera and Focal Length | Recognition (60PPF) | Classification (40PPF) |
|---|---|---|
| @ 5mm (65° FOV) | 50ft | 75ft |
| @ 12mm (36° FOV) | 120ft | 180ft |
| HD438 / HD448 (8MP, 2.8mm lens) | ||
| 2.8mm (102° FOV) | 26ft | 40ft |
Which camera is better dome or bullet?
While bullet cameras are known for a longer range, dome cameras have the ability to offer a wider view angle.Both cameras will operate well in any location, however, the bullet camera will work better for a long-range video while the dome camera will work better for shorter distances but a wide-angle.
What is PPF camera?
Pixels per foot / Pixels per meter is the most fundamental and valuable, though imperfect, metric for specifying video surveillance image quality. In a single number, this metric (e.g., 10ppf, 40ppf, 100ppf) conveys important information about what the projected quality that a camera can provide.
How is PPF camera calculated?
To calculate the PPF based on three different camera models: 1902 x 1080; 1280 x 1020; and 640×480, we use these formulas.
- 1920 x 1080 (2MP) Camera. PPF: 1920/25 = 76 PPF.
- 1280 x 1024 Camera.
- 640 x 480 camera.
- 1920 x 1080 (2MP) Camera.
- 1280 x 1024 Camera.
- 640 x 480 camera.
- 1920 x 1080 (2MP) Camera.
- 1280 x 1024 Camera.
How do you calculate ppm on a camera?
The easiest way to calculate ppm for an specific scene is to point the camera where you want to calculate ppm, and then divide the number of pixels of your image by the distance in meters of the field of view of you camera in that specific point.
Contents