Our Panasonic-sensor EA-Series auto-iris varifocal-lens HD-SDI and HD-TVI IR bullet cameras now offer ALC. These HD-SDI cameras also offer True WDR and a superior image quality, with infrared distances of up to 300 feet using new matrix IR technology. ALC (Auto Light Control) Automatic Light Control (ALC) indicates the image sensor’s ability to automatically adjust in diverse lighting conditions to yield the most vivid video image possible. It allows the auto-iris circuitry to either take bright spots more into consideration (peak), bringing out detail in bright areas, or less into consideration (average) bringing out detail in shadows. For automatic brightness control in the ALC function, an auto iris lens with a voltage controlled aperture (DC) is necessary. ELC (Electronic Light Control) ELC compensates for moderate light changes in indoor applications without the use of expensive auto iris lenses. A fixed-iris lens or manual-iris lens can be used. ELC allows the changing of shutter speeds up to 1/100,000 second. This allows for sharper images, even in limited lighting conditions.
Read Now by Raymond Shadman, President Custom Video Security email: [email protected] phone: 1-877-DEALS-79 x101 skype: rshadman There are a lot of people who are looking to get better image quality on the video security cameras for their homes or businesses. It is my job to keep up with fast past of new video security technologies, and to educate low-voltage installers, IT professionals, and consumers on the various types of video surveillance which are currently on the market. Before reading this post, one should educate himself/herself with a little background on how resolution of cameras and DVRs is measured. Older camera technology is measured in TVL or “horizontal TV-Lines”, while newer HD camera technology is measured in pixels (horizontal multiplied by vertical). The greater the number of TVL or pixels, the better the resolution. One of the biggest flaws of current analog technology is that the highest analog recording resolution is 960H (960×480), or 960 horizontal lines, but 1000 TVL cameras typically have 1280×960 pixels, or 1280 horizontal lines. This results in forced recording at 960H, even if the camera has higher resolution. That is the same concept putting a governor on a sports car to maximize the speed at which it […]
Read Now Question from our customer: I am very disappointed with the Dahua vertical NVRs that I have purchased. I was under the impression from the specs online and conversations I have had with tech support in the past that I should have no problem running 16 cameras at 1080p on that NVR… I am forced to run these cams at 720P and 10 fps or less just to get them to stay up. However, this results in lagged and low quality video at playback time. I feel that these 16 channel NVRs cannot actually handle 16 HD channels as advertised. I need a solution for this client asap as they are not too happy with me right now. What would be the chance of me returning this 16 channel and buying a 32 channel device. Do you think the 32 channel device will handle the 16 cameras at 1080p and 10fps? Our answer: What most people don’t realize is that IP systems involve technical design and a high amount of pre-configuration for the system to function properly. When compared to other video surveillance technologies such as HD-SDI, HD-CVI, or traditional analog, IP systems require the highest level of technical design and […]
Read Now By Raymond Shadman President, Custom Video Security Support for the 12 year-old operating system Microsoft Windows XP has officially been discontinued by Microsoft, as of Tuesday April 8, 2014. This means users can no longer download critical security updates, which will leave systems that are connected to the Internet and running Windows XP vulnerable to infectious worms and security attacks. There are hundreds of millions of systems that still operate on XP, including an estimated 95% of bank ATMs, POS machines, hospitals, and surveillance DVRs. So what to do now? The obvious solution would be to upgrade the operating system to Windows 7 or Windows 8. Although this is the easiest solution, it may not be viable for a number of reasons: Older systems with Windows XP are using older hardware, which likely is not compatible with Windows 7 or Windows 8. The older hardware (Pentium 4, Celeron, etc.) in XP systems most likely cannot power the more CPU and memory-intensive Windows 7 and Windows 8 as effectively as XP, which will result in a high CPU load and processing delays. The older hardware in XP systems has a much higher chance of failure, as it likely several years old […]
Read Now A hybrid DVR is a DVR that can accept more than one type of video signal. The three most common video signals on the market today are analog, HD-SDI, and IP. It is advantageous to have a hybrid DVR for many reasons, the most significant of which is to utilize existing analog cameras, while adding megapixel cameras to areas that need more detailed monitoring with clear digital zoom-in capabilities. HD cameras can also be used to minimize analog camera count, as they have more pixels and can cover large areas of real estate with a minimal number of cameras. ANALOG CAMERAS Analog, a closed-circuit television system (abbreviated by CCTV), is the traditional video signal, which has been in use for decades, and is typically carried over coaxial cable. In some cases people use Cat5 network cable to send video and even audio and power over network cable with the use of baluns, which are adapters that convert the camera’s BNC connector to RJ45 for Cat5, or to twisted pair, which is common for video-only signals. The typical distance limit for coaxial cable is between 250 to 450 feet, depending on the quality of the cable. With baluns and Cat5 cable, […]
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