1. A fluorescence endoscopy video system including: a multimode light source for producing white light, fluorescence excitation light or fluorescence excitation light with a reference reflectance light; an endoscope for directing the light from the light source into a patient to illuminate a tissue sample and to collect the reflected light or fluorescence light produced by the tissue; a camera positioned to receive the light collected by the endoscope, the camera including: a color image sensor; a low light image sensor; and a beam splitter for splitting the light received from the endoscope into at least two beams and directing those beams onto the low light and color image sensors; one or more filters positioned in front of the low light and color image sensors for selectively transmitting light of desired wavelengths; one or more optical imaging components that project images onto both the color image sensor and the low light image sensor; an image processor/controller for digitizing, processing and encoding the image signals received from the sensor(s) as a video signal; and a video monitor for displaying the video signals.