1. A stereo-endoscope for viewing an object field, the endoscope comprising a first and a second objective lens, each of which forms an image of the object field from a different respective view point, and a divergent optical arrangement between the object field and the objective lenses, wherein the endoscope has a corrected convergence point and the divergent optical arrangement has a length of divergence, so that the divergent optical arrangement is effective to reduce disparity between corresponding points at a plurality of locations in the two images of the object field.