The Photographic Materials Group (PMG) consists of about 300 members who are interested in photographic preservation, conservation treatment, history and technology. The various backgrounds and interests of PMG members mirrors the diversity of materials found in photographic media: plastic film, glass, metal, and composite objects including wood, paper prints, and album/book structures.

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The PMG convenes at every AIC annual meeting as well as at a separate biannual winter meeting. On those years that include the winter meeting, the session at the AIC annual meeting is abbreviated, usually only a business session. For those years without the winter meeting, there is often a full day of presentations at the AIC annual meeting. Presentations include a range of talks covering preservation, collections, treatment, informal tips, updates on research, disaster recovery, and the history and technology of photography. The biannual winter meeting includes two full days of presentations and frequently pre- or post-conference workshops or lectures. Other PMG activities include publication of Topics in Photographic Preservation as well as growing and sustaining the PMG Conservation Catalog Wiki

Although PMG has no formal liaison relationship with other organizations, individual members are active participants in standard setting committees such as the American National Standards Institute Photographic Standards and other professional organizations such as the Society of American Archivists.