1. A vision system comprising: an image sensor for capturing an image; at least one of a sensor setting ascertaining means for establishing an image sensor parameter, wherein the sensor setting ascertaining means comprises means for capturing and/or storing and/or calculating a position or an orientation of the image sensor, and an image analysis means for analysing an image taken by the image sensor and establishing an image parameter; an image dividing means for dividing the image into areas as a function of the established image sensor parameter and/or the established image parameter, and for assigning to each area a number of frames to be stored in a memory.