The DAFE diagnostic autofluorescence endoscopy system from R. WOLF has a number of advantages:

• Use of a small, light and therefore easy-to-handle camera unit (camera head and zoom lens); the freedom of movement that this permits also makes it possible to use rigid telescopes in the normal fashion.
• The DAFE system allows the use of competitors' bronchoscopes. Special DAFE adapters are available for these instruments. Nevertheless, to achieve the best picture quality in the DAFE mode (-> picture brightness) the special DAFE bronchoscope from R. WOLF should be the instrument of choice.
• The DAFE system can, of course, also be used for conventional white light endoscopy – without any restrictions either in handling or in the picture quality. It can also be considered as a completely normal endoscopic system.
• The changeover between conventional white light endoscopy and DAFE is simple and fast by pressing a footswitch or at the touch of a button on the light source. Changing modes does not involve changing any system components or other measures.
• To further improve the distinction between healthy tissue and pathological changes, the R. WOLF system goes one step further: A reflection image is superimposed on the pure autofluorescence image in the DAFE mode and both images are then processed in the camera controller.

The DAFE system from R. WOLF also allows colour contrast adjustment.
This allows:

• the optimum colour contrast to be adjusted in critical situations, in other words when the initial tissue differentiation is not as clear as required, achieving the best possible distinction between healthy and diseased tissue,
• the system to be adapted to the subjective colour perception of the user (this can to some extent combat colour weaknesses of the user),
• the varying spectral transmission characteristics of competitors' bronchoscopes to be adapted to the DAFE system to allow the optimum colour contrast to be set.

By optimising the fluorescence excitation on the one hand and by linking a highly sensitive 1-chip camera on the other, autofluorescence images of brilliant quality can be achieved. As a result, mechanisms to enhance brightness at the cost of image quality are unnecessary. The system does not, for example, need awkward image intensifiers and does not require integration of several video images. The patient moving (for example breathing or coughing) or movement of the bronchoscope have no detrimental effects on the image quality ("veil" and "Ruckel" effects observed with other systems). Biopsies can also be taken with no difficulty in the DAFE mode

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