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Misconception: More pixels equal better picture quality
More pixels = better picture quality, looks correct, it’s a common
misconception among users and even some security
professionals. They are inclined to think the image quality of 3
megapixel cameras must better than image quality of 2 megapixel
cameras. TVL of resolution of camera determines megapixel
picture quality, not number of pixels. For example, according to
the testing result of ASMAG magazine, Panasonic WV-SPN631 2
megapixel IP camera, its measured horizontal resolution is
1000TVL, and Hikvision DS-2CD4026FWD/D 2 megapixel IP
camera, its measured horizontal resolution is 1100 TVL. Checking
the Figure 1, both images are 3-megapixel resolution, however
the image quality is different.
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