The OAG notes on the index B123 refer to a toned cyanotype, indicating a specific archival process used in photography. Cyanotype is a photographic printing process that produces a cyan-blue print. The term “toned” in this context likely refers to a post-processing treatment done to alter the color or appearance of the cyanotype.
The OAG, or Official Airline Guide, is a comprehensive airline scheduling and reference publication used by airlines and travel professionals around the world. The index B123 would likely be a specific reference code or number assigned to this particular toned cyanotype within the OAG’s cataloguing system.
Overall, the OAG notes on the toned cyanotype in index B123 provide valuable information for those interested in the history and technical aspects of photography. It showcases the meticulous attention to detail and documentation required in the field of photography, ensuring that important processes and techniques are recorded and preserved for future generations.
Image by hlynurhelgason from Flickr.
