On the vision of insects

Summary The resolving power of the insect eye in both time and space, as well as the perception of wavelength and plane of polarization, have been the topics of numerous investigations employing diverse methods. Here we sketch some milestones on the path to our present knowledge.Dedicated to Prof. H. Autrum, on the occasion of his 70th birthdayAcknowledgement: Many of us are grateful for the collaboration ofCalliphora erythrocephala in answering so many of our countless questions