| CCTV stands for closed circuit TV and CCTV | | | | called LUX higher number, the higher the amount of |
| cameras have become significant factor in preventing | | | | light needed to capture images. Cameras, which are |
| crime. There are many types of video surveillance | | | | very low LUX rating, the approach to zero is able to |
| systems on the market, and each uses different types | | | | collect images in almost any light. If the area is light, |
| of cameras, depending on their application. | | | | constantly changing, the camera auto iris lens is |
| Low price CCTV cameras use CMOS | | | | needed to produce the best images. Manual or fixed |
| (Complementary Metal Oxide Semiconductor) | | | | iris lens compatible with the areas where the light |
| technology, which produces images of poor quality and | | | | output remains constant. |
| has a low sensitivity to light. The higher priced cameras | | | | Width and height of the image size produced by the |
| use CCD (Charge Couple Device) chips, and offers | | | | camera lens is called FOV or field of vision. If you |
| picture quality much better. CCD chips are 1/4-, 1/3- or | | | | know where the camera is placed, you can calculate |
| 1/2-inch size, and both image quality and size of price | | | | the distance between the film and then the optimal |
| increases. | | | | target, which gives the maximum FOV. |
| Black and white cameras are generally cheaper and | | | | The camera body is completely dependent on the |
| offer better processing of images in low light | | | | development and implementation of the camera. A |
| conditions. Color cameras are still the main option, but | | | | dome that has been dyed black is pleasing to the eye |
| have a higher price. If the camera has to record at | | | | and allows a wide field of vision. Any device installed |
| night or in dark areas, you need an IR (infrared) | | | | on the outside, have a robust protection. |
| camera, which can be stored in black and white when | | | | The best camera closed circuit television you buy will |
| the light is not present. | | | | be the one that best suits your environment and |
| The image quality of a camera will be measured in | | | | application. If it is necessary to record the fine details, |
| TVL, or TV lines of resolution. Greater TVL will result in | | | | you should consider buying a camera with high TVL. |
| more lines of resolution and picture quality is much | | | | For the recording of images at night or in low light, an |
| clearer. The standard size is 380 TVL to 420 TVL | | | | infrared camera is required. If you need a large space |
| cameras high quality up to 480 TVL to 570 TVL. | | | | to save time, your first priority in choosing a camera |
| Photosensitivity of the camera is measured in units | | | | should be one with a large field of view. |