Process for the observation of at least one sample region with a light raster microscope by a relative movement between the illumination light and sample via a first scanner along at least one scanning axis essentially perpendicular to the illumination axis wherein at an angle to the plane of the relative movement, preferably perpendicular thereto a second scanner is moved and an image acquisition takes place by the movement of the first and second scanners being coupled and a three-dimensional sampling movement being done by the illumination of the sample wherein the second scanner is coupled to the movement of the first scanner in such a manner that straight and/or curved lines and/or plane and/or curved surfaces are scanned which are extended along at least one scanning direction of the first scanner as well as along the scanning direction of the second scanner.