Security Camera System - Shopping Guide
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Although the application of CCTV security have not changed much in recent years, the tools and equipment have significantly. Cameras became smaller, cheaper and better, but the major breakthrough happened in recording equipment. Therefore many customers shopping for complete CCTV monitoring and recording systems are confused by the so-called truth of available products. The purpose of this article is intended to guide buyers toward best and most economical type of CCTV equipment, based on intended implementation and requirements.
Although the application of CCTV security have not changed much in recent years, the tools and equipment have significantly. Cameras became smaller, cheaper and better, but the major breakthrough happened in recording equipment.
Therefore, many customers buying CCTV recording and complete systems are confused by a verity of available products. Objective of this work is to guide buyers with the best and most economical type of CCTV equipment, based on the intended application and needs.
Selecting the right cameras.
It is almost impossible to describe all types that are available in this short article. We will focus our attention on the most popular types of camera and widely used in its place.
Security cameras produce images using CMOS or CCD (Charge Couple Device) chips. Small, very low price CCTV cameras usually use CMOS technology, produce poor image quality and has a very poor sensitivity. Decent quality CCTV cameras use CCD technology. The size of the CCD chip is normally 1 / 4 ", 1 / 3" or 1 / 2 ". As a general rule, the larger size, higher quality image is produced and a higher price. However, the highest density of 1 / 4 "and 1 / 3" CCD chips can now produce a good clear picture 1 / 3 "or 1 / 2" chips.
Number of TV pictures security camera line is a measure of image resolution (sharpness). A greater number of TV lines, better resolution and thus the overall image quality. Standard resolution camera may have 350-380 lines, over 400 TV lines, is generally considered good resolution while over 500 lines is considered high resolution. B / W chip cameras produce greater resolution and better sensitivity to light, so it is suitable for use in dark areas where light is low most of the time.
In other hand color cameras offer a more realistic and natural. CCTV cameras are usually divided into different depending on the camera body used.
Professional grade cameras.
Have box type body, with the possibility of using different types and sizes of lenses. Exchangeable lenses enable this camera to track objects from any distance. Although for indoor use, that can be used for outdoor when combined with a waterproof case. They are considered the most flexible and widely used by professionals for commercial installations.
Bullet cameras.
Bullet cameras are, as the name suggest contained bullet-shaped case.
Most units are waterproof and sealed ball without the possibility of using different lenses. Great advantage of the ball chamber is the small size and integrated design, some bullet cameras have not even built the future of infrared LED. Infrared technology is simply LED in the infrared spectrum (not visible to the naked eye). Lights viewing area, making it possible to track in the dark. It is a great future, but only works to a certain distance (usually between 10 and 50 feet, depending on model) Vary simple to install and designed estheticly, bullet cameras are the ideal choice for residential and do the same facilities where they are tracking objects within 25 feet of the location of the camera (with standard 3.6 mm lens).
Board cameras.
Cameras are basically fixed lens board mounted on the PCB. These cameras may be packaged in a small case (Mini-cameras) or dome (Mini Dome) or simply sold unpackaged, for mounting by the buyer. These lenses are both normal opening of the field goal or a "pinhole" very small aperture. Pinhole lens cameras are often called "spy" cameras and can be hidden secrets for any purpose. The most popular examples of covert government have a smoke detector and motion sensor cameras.
Since the lenses of the cameras are already installed on the board, have a fixed iris and are usually of short focal length (ie wide angle), their flexibility of usefulness is limited. This type of camera can provide a cost effective solution in the right situation, especially in the home. We have briefly described the cameras are now the most popular wafers, how and where mite be used.
Types of professional C / CS lens mount usually offer the best performance and many important future, like lens control output, compensation, Back, and more ...
Distance of the object to the surveillance camera is not a problem, so the ability to select different targets, based on the location is so important. Installation is somewhat complicated and professional installation is highly recommended. We recommend this type of security cameras for commercial installations.
Most devices Bullet in comparison, does not offer high resolution and lens selection flexibility, but will probably weather, some have built-in infrared and above all they are relatively easy to implement. They usually come with 3.6mm lens witch are considered appropriate for most standard installations (good for covering small and medium-sized room or equivalent).
For larger rooms or longer distances, cameras 6 mm lens may be necessary. They are the perfect choice for any installation do-it-yourself.
Onboard cameras, however, are widely used in plants hidden camera, spy cameras called. Many are essentially the board with built-in transmitter. We will not go into wireless cameras right now, because that would be enough material for completely new article.
Board cameras are sold as regular circuit for integration into the camera hidden devices. They are available in the dome as the dome vary popular or integrated with smoke detector, motion detector output signal and so on. Most also come with a 3.6 mm lens, although some tend to be replaced.
Over time, the most practical design has been Dome Camera with its esthetic appearance it adapts to its environment, especially with drop down sealing, ideal for use in stores, lobbies, gas stations and other places public. Practical solution for installation are also illegal, movement and smoke detector cameras, they are absolutely not a substitute for your security alarm or protection against fire. They should always be selected based on the location of the camera (inside / outside), distance from the object of surveillance, light and budget.
When shopping for security cameras, customers must choose one or another storage device.
The days of the famous video recorder CCTV time-lapse is almost complete.
Although some customers still prefer this solution for the recording of age, it is worth investing the extra money to buy a good quality digital video recorder (DVR). Digital recorder transfers analog camera video feed into a digital format and stored on disk. There are two main types of digital recorders on the market today.
PC-based systems.
A special committee and the software installed on your computer will allow camera inputs and store video on the hard disk.
Many people are under the misconception that a personal computer with additional hardware installed, it will work. This explains the hundreds of companies, which are hung a sign, removed some ads and begun working out of basements and garages, holding to be DVR manufacturers and safety experts. The biggest problem with this type of CCTV recorders lies in the most important part of it ... Yes, it's a computer, which is designed to perform unlimited, but not well. The truth is that a computer-based digital video recorder, and will always be vulnerable to software crashes, complex, system instability, virus related problems, etc. ..
Autonomous systems.
Very similar in appearance and control functions for standard video recorders, are truly remarkable devices. Most video processing is done by hardware, eliminating system crashes, video is also stored on the hard disk in digital format. The base operating system, usually Linux, is permanently stored on special processor, witch is impossible to overwrite or corrupt. Designed and manufactured with simple applications in mind, it is much better in performance and reliability of its rivals in the PC.
Some DVR systems even have the ability to remotely monitor, useful when control is needed in different locations through Internet or network. Ultimately, the most important thing to consider when selecting the right DVR recorder are motion detection and frame rate. More speed is more fluid part of the video. Motion detection can record video from each camera only when motion is detected, which is ideal for extending video recording time.
Safety shields.
VCR security could appear on a regular TV monitor. Is it okay to do it this way, monitoring the child or residential application, when the image quality is not so important. However, professional installation, security monitors are as important as the cameras. They prolong the life of a CRT (if a static image, which can cause burnout picture) and much grater resolution.
Cables and wires.
Finally any camera installation wiring required. Good quality cable will prevent video degradation over long distance races. The use RG59 or RG6 coaxial cables, because it is fully shielded to prevent video loss up to 400 feet of coaxial cable and BNC connectors require proper installation possibly done by an experienced technician. In short runs plug and play not coaxial cables with factory installed BNC connectors can be used (up to 150 feet). Plug and play cables are easy to install for inexperienced users.
Cables for cameras CCTV consists of two bundles of cables with a jacket. Cable for video and one for the handover of power.
Conclusion.
Each set of closed circuit television is as good and reliable as its weakest link. With this in mind, investing in the highest quality and performance of the cameras, while purchasing low performance recorder, from the economic point of view and in practice it makes no sense.
For example, why the use of CCTV cameras with 500 TV lines of resolution with monitor that offers only 380 or less. All profits from high-resolution camera is affectively sacrificed by limited capacity of the screen. Asking questions is important before buying the video security system, and your doctor will likely give more details and recommend equipment for specific needs and requirements.
Pictures/SnapShot :
Although the application of CCTV security have not changed much in recent years, the tools and equipment have significantly. Cameras became smaller, cheaper and better, but the major breakthrough happened in recording equipment.
Therefore, many customers buying CCTV recording and complete systems are confused by a verity of available products. Objective of this work is to guide buyers with the best and most economical type of CCTV equipment, based on the intended application and needs.
Selecting the right cameras.
It is almost impossible to describe all types that are available in this short article. We will focus our attention on the most popular types of camera and widely used in its place.
Security cameras produce images using CMOS or CCD (Charge Couple Device) chips. Small, very low price CCTV cameras usually use CMOS technology, produce poor image quality and has a very poor sensitivity. Decent quality CCTV cameras use CCD technology. The size of the CCD chip is normally 1 / 4 ", 1 / 3" or 1 / 2 ". As a general rule, the larger size, higher quality image is produced and a higher price. However, the highest density of 1 / 4 "and 1 / 3" CCD chips can now produce a good clear picture 1 / 3 "or 1 / 2" chips.
Number of TV pictures security camera line is a measure of image resolution (sharpness). A greater number of TV lines, better resolution and thus the overall image quality. Standard resolution camera may have 350-380 lines, over 400 TV lines, is generally considered good resolution while over 500 lines is considered high resolution. B / W chip cameras produce greater resolution and better sensitivity to light, so it is suitable for use in dark areas where light is low most of the time.
In other hand color cameras offer a more realistic and natural. CCTV cameras are usually divided into different depending on the camera body used.
Professional grade cameras.
Have box type body, with the possibility of using different types and sizes of lenses. Exchangeable lenses enable this camera to track objects from any distance. Although for indoor use, that can be used for outdoor when combined with a waterproof case. They are considered the most flexible and widely used by professionals for commercial installations.
Bullet cameras.
Bullet cameras are, as the name suggest contained bullet-shaped case.
Most units are waterproof and sealed ball without the possibility of using different lenses. Great advantage of the ball chamber is the small size and integrated design, some bullet cameras have not even built the future of infrared LED. Infrared technology is simply LED in the infrared spectrum (not visible to the naked eye). Lights viewing area, making it possible to track in the dark. It is a great future, but only works to a certain distance (usually between 10 and 50 feet, depending on model) Vary simple to install and designed estheticly, bullet cameras are the ideal choice for residential and do the same facilities where they are tracking objects within 25 feet of the location of the camera (with standard 3.6 mm lens).
Board cameras.
Cameras are basically fixed lens board mounted on the PCB. These cameras may be packaged in a small case (Mini-cameras) or dome (Mini Dome) or simply sold unpackaged, for mounting by the buyer. These lenses are both normal opening of the field goal or a "pinhole" very small aperture. Pinhole lens cameras are often called "spy" cameras and can be hidden secrets for any purpose. The most popular examples of covert government have a smoke detector and motion sensor cameras.
Since the lenses of the cameras are already installed on the board, have a fixed iris and are usually of short focal length (ie wide angle), their flexibility of usefulness is limited. This type of camera can provide a cost effective solution in the right situation, especially in the home. We have briefly described the cameras are now the most popular wafers, how and where mite be used.
Types of professional C / CS lens mount usually offer the best performance and many important future, like lens control output, compensation, Back, and more ...
Distance of the object to the surveillance camera is not a problem, so the ability to select different targets, based on the location is so important. Installation is somewhat complicated and professional installation is highly recommended. We recommend this type of security cameras for commercial installations.
Most devices Bullet in comparison, does not offer high resolution and lens selection flexibility, but will probably weather, some have built-in infrared and above all they are relatively easy to implement. They usually come with 3.6mm lens witch are considered appropriate for most standard installations (good for covering small and medium-sized room or equivalent).
For larger rooms or longer distances, cameras 6 mm lens may be necessary. They are the perfect choice for any installation do-it-yourself.
Onboard cameras, however, are widely used in plants hidden camera, spy cameras called. Many are essentially the board with built-in transmitter. We will not go into wireless cameras right now, because that would be enough material for completely new article.
Board cameras are sold as regular circuit for integration into the camera hidden devices. They are available in the dome as the dome vary popular or integrated with smoke detector, motion detector output signal and so on. Most also come with a 3.6 mm lens, although some tend to be replaced.
Over time, the most practical design has been Dome Camera with its esthetic appearance it adapts to its environment, especially with drop down sealing, ideal for use in stores, lobbies, gas stations and other places public. Practical solution for installation are also illegal, movement and smoke detector cameras, they are absolutely not a substitute for your security alarm or protection against fire. They should always be selected based on the location of the camera (inside / outside), distance from the object of surveillance, light and budget.
When shopping for security cameras, customers must choose one or another storage device.
The days of the famous video recorder CCTV time-lapse is almost complete.
Although some customers still prefer this solution for the recording of age, it is worth investing the extra money to buy a good quality digital video recorder (DVR). Digital recorder transfers analog camera video feed into a digital format and stored on disk. There are two main types of digital recorders on the market today.
PC-based systems.
A special committee and the software installed on your computer will allow camera inputs and store video on the hard disk.
Many people are under the misconception that a personal computer with additional hardware installed, it will work. This explains the hundreds of companies, which are hung a sign, removed some ads and begun working out of basements and garages, holding to be DVR manufacturers and safety experts. The biggest problem with this type of CCTV recorders lies in the most important part of it ... Yes, it's a computer, which is designed to perform unlimited, but not well. The truth is that a computer-based digital video recorder, and will always be vulnerable to software crashes, complex, system instability, virus related problems, etc. ..
Autonomous systems.
Very similar in appearance and control functions for standard video recorders, are truly remarkable devices. Most video processing is done by hardware, eliminating system crashes, video is also stored on the hard disk in digital format. The base operating system, usually Linux, is permanently stored on special processor, witch is impossible to overwrite or corrupt. Designed and manufactured with simple applications in mind, it is much better in performance and reliability of its rivals in the PC.
Some DVR systems even have the ability to remotely monitor, useful when control is needed in different locations through Internet or network. Ultimately, the most important thing to consider when selecting the right DVR recorder are motion detection and frame rate. More speed is more fluid part of the video. Motion detection can record video from each camera only when motion is detected, which is ideal for extending video recording time.
Safety shields.
VCR security could appear on a regular TV monitor. Is it okay to do it this way, monitoring the child or residential application, when the image quality is not so important. However, professional installation, security monitors are as important as the cameras. They prolong the life of a CRT (if a static image, which can cause burnout picture) and much grater resolution.
Cables and wires.
Finally any camera installation wiring required. Good quality cable will prevent video degradation over long distance races. The use RG59 or RG6 coaxial cables, because it is fully shielded to prevent video loss up to 400 feet of coaxial cable and BNC connectors require proper installation possibly done by an experienced technician. In short runs plug and play not coaxial cables with factory installed BNC connectors can be used (up to 150 feet). Plug and play cables are easy to install for inexperienced users.
Cables for cameras CCTV consists of two bundles of cables with a jacket. Cable for video and one for the handover of power.
Conclusion.
Each set of closed circuit television is as good and reliable as its weakest link. With this in mind, investing in the highest quality and performance of the cameras, while purchasing low performance recorder, from the economic point of view and in practice it makes no sense.
For example, why the use of CCTV cameras with 500 TV lines of resolution with monitor that offers only 380 or less. All profits from high-resolution camera is affectively sacrificed by limited capacity of the screen. Asking questions is important before buying the video security system, and your doctor will likely give more details and recommend equipment for specific needs and requirements.
Pictures/SnapShot :
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