There are two kinds of night vision: Thermal imaging uses infrared technology, and light amplification uses existing ambient light. Light amplification takes all ambient light, such as starlight, moonlight, and infrared light, and converts it into electrical energy and then back into light, allowing you to see in near-total darkness.Thermal imaging gathers all surrounding infrared light and creates a picture according to the light's temperature patterns. This "thermogram" is then converted and processed into a clear, recognizable image. Night vision binoculars do have some magnification qualities, their real function is to allow you to see a fair distance in low-light conditions, you shouldn't depend on them for extreme distance-viewing or clarity.Night vision rifle scopes allow for precision and stealth, even in the lowest light conditions. Some models can even shift from day to night vision in seconds.