The 2 million 1080p wide dynamic anti backlight drive free USB output camera module has a unit pixel size of 3.0 * 3.0um. The larger the unit pixel, the stronger the photosensitivity. It can be more sensitive under weak light conditions, and the photos taken have more color contrast effect. Compared with other USB camera modules, jsk-1021-v1.0 HD USB output camera module has larger unit pixel size, so the image quality is more delicate and bright.