author
Best known for practical late-19th-century photography manuals, this author wrote for working photographers who wanted clear, usable advice. His books range from studio lighting to industrial and reproduction processes, offering a snapshot of photography as both craft and technology.

by P. C. (Peter C.) Duchochois
P. C. Duchochois, also listed as Peter C. Duchochois, was a photography writer and practitioner active in the late 1800s. Surviving records tied to his books identify him as the author of technical guides on photographic methods, and one edition of The Lighting in Photographic Studios notes a frontispiece portrait of the author.
His known works include The Photographic Image (1891), Photographic Reproduction Processes, The Lighting in Photographic Studios (1893), Industrial Photography (1893), and Photography at Night. Together, these titles suggest a writer deeply interested in the practical side of image-making, especially darkroom work, studio practice, and specialized photographic processes.
Rather than a literary stylist, he appears to have been a hands-on explainer. The appeal of his work today lies in that directness: his books preserve the working knowledge of photography at a moment when the medium was expanding quickly into studios, industry, and technical reproduction.