Marta Braun is professor of film and photography at the School of Image Arts, Ryerson University in Toronto. She  works on chronophotographers Etienne Jules Marey and Eadweard Muybridge and has published a number of articles and lectured internationally on their work in particular and on nineteenth century science, art and   photography in general.

In 1994, her book Picturing Time: The Work of Etienne Jules Marey, was shortlisted for Britain's Kraszna-Krausz award, a prize given bi-annually for the best internationally published book in photography. She won this award in 1999, along with four other authors, for the collection of essays Beauty of Another Order: Photography in Science. Braun is a contributor (on photography and science and photography and movement as well as on individual photographers)  to the Oxford Companion to the Photograph and the Routledge Encyclopedia of Nineteenth Century Photography. She has written on time and photography for the Nelson-Atkins Museum and the Material History Review.

Braun was made a Knight of the Order of Academic Palms by the Government of France in 1996 in recognition of her contributions to French education and culture through her work on Marey.  Among other projects, she is currently working on the history of early film in Ontario and on the preservation of digital records as a research member of InterPARES.  In January 2005, she was awarded a Ryerson Research Chair in recognition of her research achievements.