Forensic lights for crime scene and medial investigations

Forensic Lights produce lights of a specific wavelength of a light. Depending on the wavelength it can increase or decrease the fluroescence of what your directing the light at. However you need to block the visible light with a filter for this to be properly seen. the most common filters are orange and yellow. but can be clear or red also. The exception is Infrared, which requires a a camera with infrared capabilities for the evidence to be seen.