Monitoring apparatus, electric; camcorders; cameras [photography]; speed measuring apparatus [photography]; optical lenses; stereoscopes; stereoscopic apparatus; range finders/telemeters; telescopes; optical condensers

Message sending; communications by telephone; communications by computer terminals; computer aided transmission of messages and images; electronic mail; information about telecommunication; communications by fiber [fibre] optic networks; satellite transmission; providing access to databases; transmission of digital files