New Books Network

Michelle Henning, "A Dirty History of Photography: Chemistry, Fog, and Empire" (U Chicago Press, 2026)

Jan 22, 2026
Professor Michelle Henning, an expert in photography and media, discusses her book, which delves into the environmental history of chemical photography tied to imperialism. She reveals how early photographic practices were dependent on coal and influenced by industrial advancements. Henning highlights the toxic byproducts of photography and their lasting impact on the environment. She examines London's fog and its symbolic connection to industrial power, and intriguingly links photographic innovations to military technology and chemical warfare.
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INSIGHT

Photography Is Product Of Empire And Coal

  • Chemical photography's materials and processes are deeply entangled with empire, industrial capitalism, and coal-derived chemistry.
  • Michelle Henning argues that photographic sensitivity and manufacture depended on global resource networks and fossil-fueled transport.
ANECDOTE

Factory Tour Reveals Film's Fragility

  • Henning describes touring an Ilford/Harman factory and the extreme sensitivity of film production environments.
  • She notes workers cannot enter coating rooms and machines must avoid reactive metals to prevent contamination.
INSIGHT

Coal Tar Fueled Photographic Chemistry

  • Coal powered the logistics, byproducts, and chemical industries that made mass photography possible.
  • Coal tar yielded dyes and sensitizers that altered emulsion spectra and enabled new photographic technologies.
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