Heliography Process
200 Years of Photography
From Contact Print to Camera
1. The Contact Process of Heliography (1822)
In 1822, Joseph Nicéphore Niépce achieved the first photographic image that could be permanently fixed: a copy of a copper engraving, made through direct light contact on a bitumen-coated metal plate.
It wasn’t the first photograph in the world in today’s sense – but it was proof that light can permanently inscribe an image into matter.
This process – the contact process of heliography – is the oldest known functioning photographic process. It did not arise from a desire to depict the world, but from a practical goal: to mechanically copy prints without having to engrave them by hand.
The Contact Process of Heliography (1822)
2. The Oldest Surviving Photograph in the World (1827)
my reconstruction
In the summer of 1827, Joseph Nicéphore Niépce set up a camera obscura at the window of his study at the Le Gras estate in Saint-Loup-de-Varennes, France, and exposed a pewter plate coated with bitumen for several days.
What emerged is the oldest permanently surviving photograph in the world: Point de vue du Gras – a view across the courtyard, in which the sun appears to shine from both left and right at once, having moved across the sky over the course of the multi-day exposure.
The image is now held at the Harry Ransom Center at the University of Texas at Austin. It measures 16.5 × 21 cm, is fixed on a pewter plate, and shows – depending on the viewing angle – either a negative or a positive. It exists once. There is no copy.
Between the two processes lie five years and a shift in direction: from reproducing an existing image to capturing a real, witnessed moment.
My reconstruction with the camera