A method for adjusting an optical system, in particular a stereoscopic optical system, comprising: - arranging a predetermined reference object having known visible reference object features in a field of view captured by the optical system; - capturing an image - provided by the optical system - of the predetermined reference object or, in the case of a stereoscopic optical system, a first and/or second half-image (112, 114) of the predetermined reference object by means of a sensor system wherein the first and the second half-image are imaged on an imaging area of the sensor system; - determining position information of at least two visible reference object features of the predetermined reference object that are imaged in the image or in the first and/or second half-images (112, 114); - ascertaining an optical distortion of the image or of the first and/or second half-image (112, 114) from the position information of the at least two visible reference object features; - adjusting an image processor, which is at least indirectly connected to the sensor system, by setting a geometric rectification in a manner corresponding to the optical distortion ascertained; wherein the method furthermore comprises the following steps during operation of the optical system for capturing an object to be examined: - arranging the object to be examined in the field of view captured by the optical system; - capturing position data containing a position deviation - determined by means of at least one reference point - of an image - provided by the optical system - of the object to be examined over captured position data from earlier points in time to determine acceleration information of the optical system or, in the case of a stereoscopic optical system of a mutual position of a first and second half-image (112, 114) of the object to be examined; and - adjusting the image processor in a manner corresponding to the captured position deviation by setting a corresponding displacement of the image or of the first and/or second half-image (112, 114) by means of the image processor. - arranging a predetermined reference object having known visible reference object features in a field of view captured by the optical system; - capturing an image - provided by the optical system - of the predetermined reference object or, in the case of a stereoscopic optical system, a first and/or second half-image (112, 114) of the predetermined reference object by means of a sensor system wherein the first and the second half-image are imaged on an imaging area of the sensor system; - determining position information of at least two visible reference object features of the predetermined reference object that are imaged in the image or in the first and/or second half-images (112, 114); - ascertaining an optical distortion of the image or of the first and/or second half-image (112, 114) from the position information of the at least two visible reference object features; - adjusting an image processor, which is at least indirectly connected to the sensor system, by setting a geometric rectification in a manner corresponding to the optical distortion ascertained; - arranging the object to be examined in the field of view captured by the optical system; - capturing position data containing a position deviation - determined by means of at least one reference point - of an image - provided by the optical system - of the object to be examined over captured position data from earlier points in time to determine acceleration information of the optical system or, in the case of a stereoscopic optical system of a mutual position of a first and second half-image (112, 114) of the object to be examined; and - adjusting the image processor in a manner corresponding to the captured position deviation by setting a corresponding displacement of the image or of the first and/or second half-image (112, 114) by means of the image processor.