Best thermographic camera are also referred to as Forward Looking InfraRed (FLIR). Such cameras use infrared radiation to capture images, very different from the ordinary camera which uses apparent light. The infrared energy is a piece of the electromagnetic range. This is at an extended frequency than perceptible light, so it shouldn't be visible to the naked eye. The thermal imaging cameras could actually distinguish objects in total darkness.

The images provided by thermal imagers are preferably monochromatic because they use a single type of sensor that responds to a single range of infrared radiation frequencies. There are two types of thermal imaging cameras. Some with cooled infrared image displays and others with uncooled identifiers. The main types of cameras have cryogenically cooled identifiers held in a vacuum-fixed carafe or housing. These cameras are more sensitive because their own temperatures are lower than those of the objects they distinguish. The downside of using this camera is that it requires overly expensive support and requires an investment to cool down before it starts working. The other type of camera uses a sensor that detects the ambient temperature. The voltage, current and blockage histories are estimated and then compared to the merits of the sensor's working temperature. The image quality and aim of these cameras are lower than the cameras with cooled identifiers.

The thermal imaging cameras are used by manufacturers, engineers, project workers, farmers, maintenance offices and beyond in the clinical field. Doctors use advanced infrared thermal imaging to review skin surface temperature history. The filtering infrared camera captures the radiation transmitted from the skin's surface and displays it on a screen. DITI can also be used to distinguish brain, vascular, skeletal and strong scaffolds. Such cameras are also used for home security. When introducing an infrared night vision camera, certain things should be considered. There must be no middle between the camera and the area to be detected. Likewise, the camera should not be placed directly in front of a mirror. The military and police also use these cameras to distinguish targets. Taking pictures in complete darkness is conceivable with such a camera.

Factors to consider when purchasing a thermal imaging camera are: sensor life, field of view, pixel count, dynamic range, and beyond band. In this way we see that thermal imaging cameras can be used for different types of applications.