The relationship between megapixels and HD is not limited to surveillance cameras, but more importantly, surveillance cameras. Megapixel = HD? Perhaps you agree with this view and he does not recognize it, then let's take a look at what the relationship between the two is.
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· A megapixel lens is equal to a high definition lens. Wu Dan, Marketing Manager of Beijing Taibang Tiandi Technology Co., Ltd. believes: “The current market generally believes that 720P can be called a megapixel lens.†Shanghai Kengao Trading Co., Ltd. Beijing Branch, Liu Guoyan, agreed, in addition to thinking that The megapixel lens is just outside the "HD lens."
· A megapixel lens is not the same as an HD lens. Gu Chenggang, director of the brand marketing department of Phoenix Optical Security (Shanghai) Co., Ltd., believes that “megapixel†is literally understood to be more than 1 million pixels, but 1 million, 1.3 million, 2 million, and 5 million pixels, although they are all megapixels. , but not entirely "HD lens".
In fact, the "HD" standard has been the subject of debate in the industry. “HD†should be a complete technical concept, including the complete process from shooting, production, storage, distribution, and display. At present, the more mature is the definition of "HD display" system. According to the American Advanced Television System Committee (ATSC), the definition of HDTV is as follows: 720P (1280×720 progressive scan), 1080i (1920×1080) Interlaced, 1080P (1920 x 1080) progressive scan). As a transitional indicator, 720P has gradually been included in the scope of “standard definitionâ€. 1080P has truly become a standard for all HD device manufacturers to promote and popularize. According to this fact, the physical pixel of 720P is about 1 million pixels, and 1080P corresponds to about 2 million pixels. So the device with more than 2 million pixels is the real entry threshold for "HD".
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