Thermal imaging are electronic devices with an integrated visual display, designed for detecting heat energy. The key component of a thermal camera is a heat sensor attached to a special type of lens, which is then adapted to work alongside standard image-capture technologies.
Thermal imaging is excellent as a “detection” tool, for locating games and the units can be used day or night. The image that you can see through a thermal device is not always clear and sharp as you are looking at a heat signature as opposed to an optical image. Clarity can be obtained at close range say 100 – 150 meters, with experience you will be able to tell what the heat source is likely to be by the way the shape.