|by Roger Chartier:
This is a "Daguerreotype"
created by Daguerre in 1838
Supposedly and most likely this is the first picture of a living person.
It was taken out of a window looking down on the Boulevard du Temple in the 3rd Arrondissement of Paris.
The image here is a reverse of the real image and took about 10 minutes to make the exposure. You can see the sign on the building has reversed letters.
Because of the length of the exposure people and horses could have passed by without being exposed.
Only people who stood still long enough were exposed on the film long enough to be captured in the image.
There are several people who are visible here.