UV sensitive CMOS cameras are used for recording the UV reflectance of untreated fingerprints, as well as fingerprints that have been processed with cyanoacrylate fuming (superglue evaporation).
Good sensitivity is often required for detecting faint luminol-treated stains. The cameras are used with a narrow band pass filter which will select the UV response only above the visible background light.
High resolution sensors, typically over 4.2 megapixel, are required for sampling specific finger print details. Image enhancement tools like Fast Fourier Transform and image subtraction that allow you to quickly identify your images can also be utilised.