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CCTV

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HD-SDI Camera vs. CCTV Camera Resolution

Traditional CCTV cameras are capable of resolutions up to about 704 x 480, which is referred to as D1 resolution, which is a hard limit that analog CCTV DVRs must abide by.

Some traditional CCTV cameras can actually capture slightly larger images than D1, but are unable to take advantage because traditional CCTV DVRs are limited to 704 x 480 resolution, which is why D1 is the accepted max resolution in the CCTV industry.

HD-SDI CCTV cameras are capable of true HD 1080p resolution (1920 x 1080). This higher resolution is the same as a high definition television and movies that consumers are use to. The SDI technology behind HD-SDI CCTV cameras is the same as the video cameras that capture video footage for “high def” motion pictures.

HD-SDI and CCTV Images
The following image compares the image size and resolution of a high definition HD-SDI CCTV camera and standard definition CCTV camera.


HD-B20 dome HD security camera DPRO-9620 model traditional CCTV camera at D1 resolution (704 x 480)