Method for setting operating parameters for a harvester, having the following steps: (a) provision of a map having properties of a field in an electronic control device of the harvester; (b) derivation of at least one operating parameter for the harvester during a harvesting operation by the control device by taking account of a property of the field that is taken from the map for a harvesting position; (c) setting of an actuator (36, 38, 42, 84, 48, 50) of the harvester on the basis of the derived operating parameter by the control device; (d) ascertainment of a finely adjusted operating parameter by the control device on the basis of the result of step (b) by taking account of a measured value, captured using a sensor (46, 52, 58), for a result of the harvesting operation, which result can be influenced by the actuator (36, 38, 42, 84, 48, 50), and/or for a correlation between an operating parameter ascertained in step (b) and an operating parameter that is to be set, which correlation is ascertained on the basis of a user input, and repetition of step (c) with the finely adjusted operating parameter; characterized in that (e) the control device uses the map to identify sections along a path of the harvester across the field at which properties of the field are homogeneous within predetermined limits, and distances above a threshold value for the length, and in that (f) calibration data for the sensor (46, 52, 58) and/or parameters for the fine adjustment of the operating parameter and/or the user input for step (d) are ascertained on passing over and reaping at least some of the sections identified in step (e) and are used in subsequent steps (d). (a) provision of a map having properties of a field in an electronic control device of the harvester; (b) derivation of at least one operating parameter for the harvester during a harvesting operation by the control device by taking account of a property of the field that is taken from the map for a harvesting position; (c) setting of an actuator (36, 38, 42, 84, 48, 50) of the harvester on the basis of the derived operating parameter by the control device; (d) ascertainment of a finely adjusted operating parameter by the control device on the basis of the result of step (b) by taking account of a measured value, captured using a sensor (46, 52, 58), for a result of the harvesting operation, which result can be influenced by the actuator (36, 38, 42, 84, 48, 50), and/or for a correlation between an operating parameter ascertained in step (b) and an operating parameter that is to be set, which correlation is ascertained on the basis of a user input, and repetition of step (c) with the finely adjusted operating parameter; characterized in that (e) the control device uses the map to identify sections along a path of the harvester across the field at which properties of the field are homogeneous within predetermined limits, and distances above a threshold value for the length, and in that (f) calibration data for the sensor (46, 52, 58) and/or parameters for the fine adjustment of the operating parameter and/or the user input for step (d) are ascertained on passing over and reaping at least some of the sections identified in step (e) and are used in subsequent steps (d).