The invention concerns a device for characterization of subjective speckle formation, especially for quantification of the speckle contrast. The device has a projection surface (9) and a coherent or partly coherent light source (10) for projecting of an image onto the projection surface (9), a detection unit (11) for generating of speckle images (13) of the image projected onto the projection surface (9), as well as a data acquisition and analysis unit (12) for processing and evaluation of image data.