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The photography examples that you will be looking at today date from between 1826 and 1857. They focus geographically on three locations: Dorchester, which is a city in the county of Dorset, England—the home of William Henry Fox Talbot; Chalon-sur-Saône, in the Burgundy region of France, where Nicéphore Niépce lived and died; and Paris, France, very near to where Louis Daguerre died in 1851.
The pinhole camera and camera obscura were precursors to the invention of photography. A pinhole camera is essentially a sealed container, such as a box, that blocks light except for one tiny aperture (pinhole) that allows light to enter. Pinhole cameras have no lenses to adjust and invert the image, so it appears upside down.
Camera obscura is an optical device that functions using the same principles as a pinhole camera, but it could be more elaborate, using lenses and mirrors to adjust the image, and range in size from tiny portable boxes to huge rooms. In the diagram below, the arrow is pointing to the one opening where the light enters the room.
The beginnings of photography adopted the principles of the pinhole camera and camera obscura but used photosensitive chemicals on metal plates or paper to capture the image. There were two early methods of photographic process.
The direct positive method involves taking a (typically) metal plate coated in photosensitive chemicals and exposing it to light. The process works as follows:
The earliest photos by pioneering photographer Nicéphore Niépce used this direct positive process, as did those by Daguerre, who invented the daguerreotype, a technique based on this process.
Nicéphore Niépce is one of the original inventors of photography and a technological pioneer. He captured the following image—the first known photograph of nature—using a modified camera obscura instrument with a photosensitive, chemical-covered metal plate. The exposure time was many hours, which is why you see shadows that appear from two sides, not just one, due to the movement of the sun.
Niépce used a chemical called bitumen of Judea, a naturally-occurring, asphalt-like material that hardens with exposure to sunlight. The process works like this:
The negative photographic process involves capturing an image with the color values inverted. Darker colors appear lighter, and lighter colors appear darker—the result of using different chemicals that were much more sensitive to light.
The calotype process, invented by William Henry Fox Talbot, is a form of the negative photographic process, which served as the precursor to modern photography. The overall process isn’t drastically different from the direct positive process. A metal or paper substrate covered in photosensitive chemicals is inserted into the camera housing. Next, the aperture is opened for a certain length of time, minutes to hours. Lastly, the chemicals react with the light, creating a negative image.
Louis Daguerre (full name Louis-Jacques-Mandé Daguerre), a friend and co-experimenter of Niépce, also experimented with early forms of photography. Upon Niépce's death, Daguerre built upon the process that his friend had pioneered, resulting in the daguerreotype, a form of direct positive photography that created significantly more detailed results.
Now, with the incredible results and eventual decrease in cost as the execution of the method improved, the daguerreotype reigned for many years as the most important form of photography, with people from all walks of life able to afford photographic images.
Daguerreotypes use a silver-coated surface as the substrate—the base metal—which tarnished and scratched easily. This meant that they needed to be sealed under glass and kept in a protective case. The direct positive process also meant that photos were one of a kind.
Because of the exposure time needed, early photographs were often of still lifes or scenes in nature. The photo shown below is actually of a rather busy street, but because of the exposure time—which is 10 minutes or so—it appears to be otherwise.
The only sign of life that does appear in the photo is this image of a person who you can assume is purposefully posing in this scene.
As mentioned before, William Henry Fox Talbot developed the first form of photography that used paper and a negative, in which the color and light values were inverted. Remember, the use of a negative meant that multiple positive images, or prints, could be made from just one negative. Here is an example of one of Talbot’s calotypes:
Early in its existence, photography encountered resistance from the art community in declaring it not “true art.” Photographers developed the Pictorialist movement as a way of establishing photography as a valid art form. The piece below by Oscar Rejlander is an example of Pictorialist photography.
Pictorialism involved photomanipulation in order to make the photo look more like a print or painting. Rejlander’s photo above is actually a composite of multiple individual images spliced together. It depicts the two ways of life, virtue (below, left) and vice, or sin (below, right).
Source: This work is adapted from Sophia author Ian McConnell.