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 […]
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