The thesis entitled Terminology Standardisation Success or Failure? A study of the terminology of cinematography is a study of terminology work and, in particular, the work being carried out by the International Organisation for Standardisation (ISO). The mam aim of this thesis is to determine whether or not standardised vocabulary is used by people working in the field of cinematography. The thesis tries to ascertain whether or not standardisation organisations disseminate information on their standards by investigating whether professional cinematographers are aware that some or all of the specialised terminology they use is the subject of standardisation, and that glossaries containing vocabulary relevant to their work are published. The thesis contains six chapters, a bibliography and an appendix. Chapter 2 is an introduction to the field of cinematography. Chapter 3 gives a brief history of terminology, talks about the theory of terminology, language planning and standardisation, term formation and terminology in the world today. Chapter 4 talks in detail about terminology standardisation and the work of ISO in particular. It gives information on the history and principal activities of ISO and ISO TC 37 "Terminology (Principles and Co-ordination)" Chapter 4 also discusses the standardisation of cinematography terminology. Chapter 5 discusses whether the terminology work being earned out in the world today is successful I compiled two questionnaires containing standardised (from ISO 4246 Cinematography - Vocabulary) and nonstandardised cinematography vocabulary. These were completed by people working m the cinema industry in Ireland and Great Britain, and the results analysed to prove whether or not cinematographers actually use the standardised vocabulary. The results of this survey also enable us to see whether subject specialists are actually aware of the terminology work being carried out in their field and of the existence of such glossaries. Chapter 6 is a conclusion to the thesis. The appendix contains documents referred to in the different chapters.