How many types of CCTV lenses are available in the market?
There are four types of CCTV lenses are available in the market: 1. Fixed Aperture, 2. Manual Iris, 3. Zoom and 4.Auto Iris. All these four lenses have their own abilities to capture images in different conditions.
Which security camera is suitable for residential use?
Actually, it totally depends upon you because security cameras comes in different style like dome cameras, infrared cameras, bullet cameras, c-mount cameras. These all have their own specialty like dome cameras are better for 360 degree surveillance, infrared cameras are good for little or no light areas, bullet cameras are used at small places like gallery, lobby, etc and ic c-mount camera we can change its lenses whenever we like.
Which place will be suitable for Bullet Camera?
Bullet cameras are small cameras whose length is around 2 to 2.5 inches only. It focal length is limited and will be suitable for galleries or small spaces. It is also known as lipstick cameras.
What is a Dome Security Camera?
A Dome Security Camera is a camera whose outer body is shaped like a dome. It is a multi-purpose camera which can be installed both inside and outside of a house. It is installed with pan,/tilt/zoom feature and have a high level of focusing power.
What is CCTV?
A CCTV (Closed Circuit TeleVision) is a video magnification system consisting of a video camera connected to a video screen provides gray scale, high contrast, false colors, inverse video display, natural colors, and/or control of contrast level and brightness. There are two ways for achieving Video magnification - from small camera imager, electronic conversion to the larger display screen and the optical focal adjustment effect of the cameras zoom lens.
How Night Vision Camera work?
There are two methods by which Night Vision Camera Works.
1. Light Amplification : In this system very small amount of light in dark is captured by camera and then amplified to a level where a human can see those images easily.
2. Thermal Imaging : In this technique thermal radiations emitted by human body
is received by infrared receptors and then converted to black and white images.
Which type of Security Camera is best for wide area surveillance?
PTZ security camera cover very wide area with its Pan Tilt and Zoom feature and that is best suit for wide angle capturing.
How does Wireless Camera work ?
Wireless camera convert images to electrical signals then an inbuilt transmitter converts those signals to electromagnetic frequency and transmit into air. At other a signal receptor receive those signal and convert them back to electrical signal which is then displayed in TV or Recorded into DVR.
What are some other common uses of CCTV?
The term "Closed Circuit TV" does in fact most often refer to security and surveillance camera systems. There are various other uses of CCTV
- Live on-site video displays of arena sports and concerts.
- Pay-per-view telecasts of boxing and pro wrestling.
- Commonly used in
- Grocery Stores
- Airports
- Hospitals
- Racetracks
- Schools
- Malls
- Municipal Buildings.
What is Auto-Iris Lens?
For produce consistent video signals in scenes with varying light levels we use Auto-Iris Lens. It makes surveillance more reliable in areas that would otherwise be compromised.
What does Varifocal Lens mean?
When security camera surveys a distant point varifocal lenses are ideal in that situations. Either manually or automatically we can adjust the zoom and focus of these lenses.
Can outdoor cameras be used indoors or vice versa?
You can use outdoor cameras for indoor purpose but indoor cameras cannot be used outdoor. Some security cameras should not be used outdoors unless protected completely from the elements.
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