The Manual Zoom (Vari-Focal) lens offers a range of viewing angles when installing your security camera. For instance, a popular lens option would be a 2.8-12mm Lens. This lens would allow for a Wide View (2.8mm) or a Zoomed In View (12mm) or anything in between.
What is manual varifocal lens?
What is a varifocal lens? Varifocal lens has a manual zoom option, giving you options to find which angle is right for your situation without the losing out on details. They can be reused for different places and situations.
What does varifocal mean CCTV?
A varifocal lens is a camera lens with variable focal length in which focus changes as focal length (and magnification) changes, as compared to a parfocal (“true”) zoom lens, which remains in focus as the lens zooms (focal length and magnification change).
What is motorized varifocal?
Compared with the conventional manual vari-focal lens, a camera has the motorized zoom lens can automatically adjust the focal length of camera to get clear auto focused image. This makes security camera installation become much quicker and easier.
What is the difference between varifocal and fixed lens CCTV?
Fixed lens are one size and cannot be changed. This is typically used in applications where you don’t need to change the view angle. Varifocal lens on the other hand come with a variable size, allowing you to adjust the angle of view for any particular application.
What does 2.8 12mm lens mean?
Normally the varifocal security camera is from 2.8 to 12 millimeters, this means that you can increase and decrease the degree of vision. normally the varifocal security cameras are more expensive than the fixed lens cameras, the lenses Fixed are the cameras that the angle of vision does not vary.
What is motorized zoom?
These lenses are designed for integration into bullet and dome cameras. The focus and zoom motors allow user control of the focus and zoom functions remotely without direct handling of the lens itself.
What is hikvision varifocal?
Hikvision Varifocal Cameras (27)
A varifocal camera allows you to adjust between its top and bottom limits on its view angle. This means that you have the ability to manually set both the view angle and level of zoom.
What is the difference between 2.8 mm and 3.6 mm lens?
Offers a wider field of view, and is typically the broadest field of view for most standard CCTV Cameras. 3.6mm is a legacy camera size, typically only available in TVI Cameras or Varifocal lenses.
What is C mount camera?
A C mount is a type of lens mount commonly found on 16 mm movie cameras, closed-circuit television cameras, machine vision cameras and microscope phototubes. C-mount lenses provide a male thread, which mates with a female thread on the camera.
What is dome camera?
Dome cameras get their name from their dome-shaped structure. These security cameras are designed to withstand all elements, both inside and outside. Their construction allows for the camera to work even in low-light or no-light settings due to the built-in infrared LEDs.
What is motorized lens CCTV?
A motorized CCTV camera is a type of camera that comes equipped with motorized lenses. The camera can be adjusted via digital instruction, as opposed to manually having to zoom or focus. The cameras can be altered using apps or software from any computer or device and can be done swiftly and accurately.
What is fixed camera?
Video Capture. The picture or video is captured via the camera and lens assembly. Surveillance cameras are traditionally either fixed cameras, which provide a single view, or pan/tilt/zoom (PTZ) cameras, which provide several views and can be controlled remotely from a security control center.
What angle is a 2.8 mm lens?
2.8mm for a 90° view
With a wide field of view, the 2.8mm lens is a popular choice for static camera surveillance. It can cover a wide area with just one camera. The 2.8mm lens is very popular indoors.
What are the advantages of varifocal camera over fixed lens camera?
The key benefit to a varifocal camera is the flexibility this gives you during installation. They allow you to adjust the lens between the top and bottom limits of its view angle. This flexibility does come with an increase in cost.
How far can 8mm lens see?
The 8mm Lens. This results in an angle of view a touch greater than 40°. A camera with this lens will identify people at around 40 feet. This is a good budget lens for a more focused, targeted camera view to identify people, without the added expense of a varifocal lens.
How wide is CCTV camera see?
Camera lenses are measured in mm, the smaller the number the wider the angle of view. 2.8mm or 3.6mm would be considered wide angle.
| 2.8mm lens | 1.5 metres |
|---|---|
| 6mm lens | 5 metres |
| 9mm lens | 6 metres |
| 12mm lens | 7 metres |
| 22mm lens | 12 metres |
What is the maximum range of CCTV camera?
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 4K lens?
The LENS 4K Surgical Imaging System is a surgical video platform with the latest 4K technology designed for sports medicine and multispecialty centers for use in arthroscopic and endoscopic procedures to maximize your overall investment.
What is fixed iris?
On a fixed iris, the opening that allows light into the camera cannot be adjusted. This type of iris is ideal for indoor recording where the light levels stay consistent when the camera is recording, such as an office or school with many large overhead lights.
What is bullet camera?
A bullet camera is a small camera designed for security applications. The name comes from the small size of these cameras resembling bullets. The camera is typically connected to a surveillance system. These cameras allow businesses and individuals to monitor their property for suspicious activity.
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