Which is the complicated way to say: The highest resolution analog camera is equal to the lower end of the IP spectrum. In addition to D1, the other analog sizes include: Like their IP brothers, analog security cameras also typically come in four standard sizes. Technology eventually advanced to the point where analog high definition (AHD) applied to these cameras, allowing them to produce 720- and 1080-pixel high-resolution videos. Analog video technology derived from the television industry, where the standard resolution for a traditional security camera is known as D1 and equates to an image of 704 x 480 pixels. The move up from one standard size to the next roughly doubles the resolution compared to the previous size:Īnalog cameras measure a little bit differently, using the number of horizontal and vertical television lines (TVL) displayed in an image as compared to pixels.
To calculate the number of pixels, simply multiply the width of the image by the height of the image.Ī 2MP camera produces images that are 1920 pixels wide by 1080 pixels tall, equaling 2,073,600 pixels per image. IP security cameras typically come in one of four standard resolutions: 2MP, 4MP, 5MP, and 4K (sometimes called 8MP). The higher the number of pixels, the higher the resolution. And IP security cameras measure resolution by the number of pixels in an image. The term IP is short for internet protocol. There are two basic categories of security cameras-IP and analog. There are a baffling number of cameras and resolutions available on the consumer market, but the math behind figuring out what you want in a security camera is surprisingly easy. Welcome to the 2020s-it’s finally time to pull the trigger and get a home security camera.
Different Security Camera Resolutions and Which is Right for You
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