Generative Art Timeline · Chapter 4: Digital Era (1960s)
1968
Generative Photography at Bielefeld Kunsthaus

Gottfried Jäger, Hein Gravenhorst, Kilian Breier and Pierre Cordier introduced the art world to the concept of generative photography with this eponymous exhibit at Bielefeld Kunsthaus. Rather than thinking about photography as a mirror of the real world, Jäger’s generative photography was non-representational. This abstract work showcased the creative, yet scientific, experimentation possible with the device. According to art critic Georg Bak: “Photomechanical transformations, chemigrams, luminograms and pinhole structures presented a non-representational, systematic-constructive photographic visual language.” While an important movement in its own right, generative photography also served as critical stepping stone in the digitization of art. Herbert Franke explains how the generative processes used by Gravenhorst and Jäger “are results of a generative photography created in programmed working stages. From here it is but a step to electronic automation and so to the computer.”
Text by Peter Bauman. Generative Art Timeline, Le Random, fact-checked September 2026.
Sources
People
Georg Bak, Gottfried Jäger, Hein Gravenhorst, Herbert W. Franke, Kilian Breier, Pierre Cordier
Movements
computer art, generative art, generative photography
Filed under
- Ideas
- abstraction, generative art, photography, systems
- Technologies
- chemigrams, computer art, generative photography, luminograms, photomechanical transformations, pinhole aperture structures
- People
- Georg Bak, Gottfried Jäger, Hein Gravenhorst, Herbert W. Franke, Kilian Breier, Pierre Cordier
- Exhibitions
- Generative Fotografie, Programmed
- Organisations
- Kunsthaus Bielefeld
- Places
- Bielefeld
Echoes across time
Le Random editorials
- Gottfried Jäger on a New Kind of Being, Anika Meier, March 2, 2026
- Jason Bailey, Georg Bak & Kate Vass on the Art Form of Our Generation, Peter Bauman, May 29, 2024
Le Random podcast
- Timeline Ch 3—Analog Era (1950s) with Georg Bak — listen with transcript on Le Random (10 Aug 2023, 65 min). Featuring Georg Bak. Apple Podcasts · Spotify
- Elevating the Generative Art Space (Launch Episode) with Casey Reas, ciphrd, Anne Spalter, Anika Meier & Georg Bak — listen with transcript on Le Random (28 Jun 2023, 52 min). Featuring Georg Bak. Apple Podcasts · Spotify
- Timeline Ch 4—Digital Era Pt I (1960s) with Dr A Michael Noll — listen with transcript on Le Random (07 Sep 2023, 60 min). Chapter 4’s episode. Apple Podcasts · Spotify
- Timeline Ch 4—Digital Era Pt II (1960s) with Michael Spalter — listen with transcript on Le Random (21 Sep 2023, 77 min). Chapter 4’s episode. Apple Podcasts · Spotify