This book deals with the contribution of the product designer to the effective implementation of new technologies. With various other motives, technological changes play a determinant role in the historical development process of product design. Since they are products having various photographic technologies adapted to a close product-user relationship and accommodating elements mediating this relationship, the subject is discussed with specific emphasis on amateur photographic camera designs. The research does not comprise a detailed technical explanation of photographic cameras, but rather an analysis of the functioning and certain design values of some typical consumer oriented camera designs having significant technical content; and their relationship with the users and the technology. To illustrate the subject matter, the literature of radical technological changes is scrutinised together with the literature of visualisation and photographic technologies. The data are broadened by a field study, planned for having outcomes both from the designer's and the user's points of view.