Device for radiometric measurement of a surface of a measurement object having effect pigments of flakes embedded in a carrier material, having at least one measurement array (100; 200; 300; 400) having an illumination array (110; 210; 410) and an acquisition array (120; 220) and having a computing device for controlling the illumination array (110; 210; 410) and the acquisition array (120; 220; 420) as well as for processing the measurement signals generated by the acquisition array (120; 220; 420) and for providing the processed image data, wherein the illumination array (110; 210; 410) has at least one light source and is configured to direct illumination light onto a region of the measurement object at an illumination angle (θ i) and an illumination aperture angle (α i) and wherein the acquisition array (120; 220; 420) has a photoelectric image sensor and is configured to detect measurement light reflected from the measurement object at an acquisition angle (θ v) and an acquisition aperture angle (α v) and to direct it onto the image sensor, and wherein the illumination array (110; 210; 410) is configured to generate illumination light in a plurality of spectral regions and/or the acquisition array (120; 220; 420) is configured to divide the detected measurement light into a plurality of spectral regions so that the image sensor generates multi-spectral image data, wherein the illumination aperture angle (α i) of the illumination array and/or the acquisition aperture angle (α v) of the acquisition array is or are, respectively, larger than the angular variation over the spectral measurement region of the light reflected from an effect pigment or flake, respectively, embedded in the carrier material caused by the material dispersion of the carrier material, wherein the device includes firmware, characterized in that a correction parameter or a set of correction parameters for correction of point spread functions of the acquisition array is stored in the firmware of the device, wherein the correction parameter or the set of correction parameters is derived from a homogeneous device-independent target-point spread function, wherein the computing device is configured to process the multi-spectral image data using the correction parameters stored in the firmware. having at least one measurement array (100; 200; 300; 400) having an illumination array (110; 210; 410) and an acquisition array (120; 220) and having a computing device for controlling the illumination array (110; 210; 410) and the acquisition array (120; 220; 420) as well as for processing the measurement signals generated by the acquisition array (120; 220; 420) and for providing the processed image data, wherein the illumination array (110; 210; 410) has at least one light source and is configured to direct illumination light onto a region of the measurement object at an illumination angle (θ i) and an illumination aperture angle (α i) and wherein the acquisition array (120; 220; 420) has a photoelectric image sensor and is configured to detect measurement light reflected from the measurement object at an acquisition angle (θ v) and an acquisition aperture angle (α v) and to direct it onto the image sensor, and wherein the illumination array (110; 210; 410) is configured to generate illumination light in a plurality of spectral regions and/or the acquisition array (120; 220; 420) is configured to divide the detected measurement light into a plurality of spectral regions so that the image sensor generates multi-spectral image data, wherein the illumination aperture angle (α i) of the illumination array and/or the acquisition aperture angle (α v) of the acquisition array is or are, respectively, larger than the angular variation over the spectral measurement region of the light reflected from an effect pigment or flake, respectively, embedded in the carrier material caused by the material dispersion of the carrier material, wherein the device includes firmware, characterized in that a correction parameter or a set of correction parameters for correction of point spread functions of the acquisition array is stored in the firmware of the device, wherein the correction parameter or the set of correction parameters is derived from a homogeneous device-independent target-point spread function, wherein the computing device is configured to process the multi-spectral image data using the correction parameters stored in the firmware.