The HD-210U camera offers 1920 x 1080 pixel resolution (2.1mp). Why do I see a better live image on an HD monitor than using a 5mp camera?

The HD-210U camera offers 1920 x 1080 pixel resolution (2.1mp). Why do I see a better live image on an HD monitor than using a 5mp camera?

The output of the HD camera is 1920 x 1080 pixels (750 TV lines of resolution), which exactly matches the resolution of the HD display, pixel-to-pixel. Therefore, you do not lose any information. Because higher megapixel cameras cannot display their full resolution, the image is compressed to fit the display and resolution is reduced.