Imperial Beach just before sunset. View through my eyes and lens... ~
San Diego Photographer. You can find me chasing cloudscapes from San Diego California.📸📷📸... A big thank you to all my friends and followers. x ~
The first photographic process — heliography — was invented around 1824 by Nicéphore Niépce. Images were obtained with bitumen of Judea spread on a silver plate after an exposure time of several days.
In 1829, Niépce associated Louis Jacques Mandé Daguerre to his research.
In 1832, they put the last touches, using a residue of lavender oil distillation, by means of a second process producing images in a one day exposure time
Hippolyte Bayard, 1801-1887
In 1833, Niépce died, and Daguerre invented, in 1838, on his own the daguerreotype, the first process including a development stage. A silver plate coated with a very thin silver iodide layer was exposed in a camera obscura, then exposed to mercury vapors that induced the apparition of the invisible latent image that had been formed during the exposure to light. This development was in fact such an amplification of the effect of light that the exposure time was hardly more than 30 minutes. Fixing was done by immersing the plate in sea salted water