The round table discussion, composed of two parts, had approximately sixty participants. The first part, to which the majority of time was devoted, dealt with non-silver materials presently under research and development or having recently appeared on the market. The second part was concerned with problems of choice, use and supply of silver emulsions. Due to the interest shown by the participants, the discussion of most of these products was primarily oriented around the use of sensitive surfaces in holography. Consequently certain materials, such as photochranes and europium oxide films, which have different uses, were in fact abandonned during the open discussion.