vol. 1. The eye's performance -- v. 2. Photographic film : an example of a detector -- v. 6. Producing an image : lenses -- v. 7-8. Improving the image : spatial filtering -- v. 9-10. The recording and reproduction of visual information (an introduction to holography) -- v. 13. Imaging dislocations with an electron microscope: a case study -- v. 14. Albert Crewe's atom : a case study