Still Life (1837), Louis Daguerre
- Niepce died in 1833, but his partner, Louis Daguerre, soon discovered a way of developing photographic plates and reducing the exposure time from eight hours down to half an hour.
- Daguerre also discovered that an image could be made permanent by immersing it in salt.
- After a report on this invention, the French government bought the rights to it in July 1839.
- Details of the process were made public on August 19, 1839, and Daguerre named it the Daguerreotype.