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Buying a security system is a tricky task and selecting its accessories and parts is more difficult than that. The quality of final picture and video is depending mostly on monitor, DVR, accessories and lens of the camera system. The lens of the camera is only accessory which can easily improve the value of security system. Many factors are there to affect the functionality of lens of a security camera along with its compatibility. The quality of lens is most important for the quality of pictures by camera. Hence, you have to consider these qualities of a camera lens before investigating and investing on state-of-the-art security camera. Qualities of a robust camera lens 1. Focal length : The focal length along with field of vision is the first quality of a robust camera lens to consider. The focal length helps you determine both the length and distance of viewable field. As a rule of thumb, the more the smaller focal length, the wider will be the range of field of vision. On the contrary, the larger the focal length, the narrower the field of vision of larger range. In order to capture image within the field of 20 meters or above, a 2.8mm focal length is enough. But if you want to capture clearer images of objects in long distances, you would require 12mm lens. The 8mm is average focal length in most camera lenses. 2. Image format : The lens should have image format to be matched with the paired camera in order to improve picture quality. Most security cameras come with preloaded image sensors. In particular, they capture light, transform the same into electrons and then assemble it into a viewable picture. The image sensors are sorted by the fraction of inches. The larger fraction covers a larger range of viewable field. However, mostly lenses come with image sensor of maximum size so that it can be compatible with. If a camera of half inch image sensor paired with one-third inch lens, It covers the same field of vision that one-third inch sensor covers. The image sensor of the camera should be matched with the size of camera when it comes to pair a lens with the camera. 3. Types of lenses : The lenses are categorized into three types – monofocal, verifocal and zoom. Monofocal lens is easily available and less expensive. They focus mainly on the objects at a particular distance with predefined focal length. The range of focal length can be adjusted manually of verifocal lenses in order to change the viewable range. Zoom lens is most expensive range because these lenses are adjusted electronically, rather than manually; although the range of focal length is similar to verifocal lens. 4. Aperture : The aperture of the lens is a hole from which light passes to enter into the camera. F-stops is the measuring unit of the size of aperture. The lower the number, the wider the aperture. More light passes into the camera if the aperture is larger and the depth of field is also affected by the aperture. More objects are covered in focal range if the f-stop number is higher and aperture is lower. On the contrary, the image of objects may blur if the aperture is wider. 5. Iris : The type of iris affects the flexibility of processing light in the camera. The amount of light which passes through the aperture of lens is influenced by iris. Iris is categorized in two basic varieties – manual and auto. With the manual iris, a particular amount of light can be passed through the lens’ aperture and this is perfect for little or no variance in the indoor conditions. On the other side, auto iris lens is perfect for outdoor conditions where the lighting conditions fluctuate. As the name suggests, the auto iris lens automatically detects and adjusts in order to serve in different brightness levels. Why Sony is best for security in home or office? Sony is one of the leading brands which offer high quality security systems in the security industry. The company proudly provides different types of security systems in order to serve different types of surveillance needs. 1. Security cameras : Sony Home Security Cameras are powered by remote capabilities of monitoring with high-quality devices. For high functionality and customizability, one can add video recorders in these cameras. 2. Video Recorders : There are two varieties of video recorders available of HSR series by Sony and both of them are customizable and convenient. The users can easily program motion detection, video recording and other techniques of integration with the help of in-build network interface. 3. Monitors : The LCD monitors from Sony help business owners and homeowners view footage with lifelike clarity. The Sony LCD monitors cater the monitoring needs of users with slim design, high quality pictures and outstanding performance. 4. CCD image sensors : These small sensors give amazing image sensitivity with HD resolution without compromising the space of SD sensors. A grid of millions of small capacitors in the charged devices turns lights into electrons to be utilized in silicon chips. This technique makes photoelectric effect in order to absorb more improved charge intensely in each capacitor. This is the technology to make clearer images and videos used by Sony. 5. Encoders : The video encoders of Sony give IP-based video surveillance to the homeowners in the form of analog CCTV systems. This enhances the monitoring capabilities of the users around their networks. Bottom Line In conclusion, lenses also are available in different types and qualities like cameras. You have to consider the functionalities and limitations of a particular type of lens because different varieties of cameras and lenses serve different surveillance levels. When it comes to get uncompromised surveillance in your home or workplace, there is no better solution than Sony high security cameras and security systems. You can find a large range of security systems at competitive prices. Now, the choice is yours. Either you can buy high quality cameras for extra protection or end up with lower price or less features. Visit geminicomputersinc.com to get the best deals in high quality Sony home security cameras.
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