Identification Methods of Glass Plate Negatives based on their visual characteristics

Photographs, among the range of visual recordings of cultural heritage, are important for rebuilding and visualizing the culture and civilization of the past. Knowledge of the material and techniques employed to produce them is also important both for historical research and preservation. This paper introduces techniques and methods of producing glass and plate photographic negatives, and methods for identifying them by their visible morphological characteristics.
Method/Research Design: Findings are based on of archival, the Internet, and library resources.
Findings and There are three basic types of glass plate negatives, namely, albumen glass plate, collodion glass plate, and gelatin dry plate. Each can be quickly identified by their unique visual properties such as thickness of the glass support, edge cut of the glass, color of the image, evenness of the edges of the binder, varnish layers, evenness of glass support surface, and emulation surface.