Oh boy, simple ideas can drive outstanding results. A Japanese amateur photographer named Spyuge combined an Epson flatbed scanner with a Canon manual-focus lens. Voila, result is an extremely high resolution scanner-camera thingy. The resolution of each picture is about 13,068 x 10,173 pixels!
Good, taking a picture with that device would take some time, but for a special-armed robot agent maybe a good idea. Uhm, I think more of making scientific scans from the surface of foreign planets than exploring the private life of your neighbours. ;)