Daguerreotype
Invented by Louis-Jacques-Mandé Daguerre and introduced worldwide in 1839, daguerreotype was almost completely superseded by 1860 with new, less expensive processes yielding more readily viewable images. In the late 20th century, there was a revival of daguerreotypy by a small number of photographers interested in making artistic use of early photographic processes.
Daguerreotype
Johnson's father travelled to England with some specimen portraits to patent the camera and met with Richard Beard who bought the patent for the camera, and a year later bought the patent for the daguerreotype outright. Johnson assisted Beard in setting up a portrait studio on the roof of the Regent Street Polytechnic and managed Beard's daguerreotype studio in Derby and then Manchester for some time before returning to the US.