The reversing image is not clear

A、camera on the market vary widely, there are also clear high-definition camera, the price is also different, the effect will be much better HD, with LED lights at night the effect will be good, but the day will be a bit reflective, the image white, without LED lights Camera day effect will be very good, but the night the image will be snow, not clear;

B、If the camera image is dark, not clear, you can also adjust the OSD brightness, contrast, color adjustment to the normal range, look at the next effect;