History of Photography Overview

The camera obscura, meaning 'dark room,' is a fundamental concept in photography. This phenomenon, known for millennia, projects an inverted, reversed, and colored image through a small hole in a darkened space. Early improvements included adding a lens for a brighter, more focused image. This simple concept formed the basis for later photographic experiments.

Johann Heinrich Schultze demonstrated in the early 18th century that light, not heat, caused certain silver compounds to darken, a crucial step in understanding photosensitivity. The first photographs were revolutionary, offering 'mirrors with a memory' and fundamentally changing perceptions of time and memory. People could now see what ancestors looked like, making photography a powerful cultural force.

In 1814-1815, Nicephore Niepce discovered that asphalt was light-sensitive, leading to the creation of the earliest known permanent photograph, a view from a window in the 1820s. Niepce later partnered with Louis Daguerre, a showman who understood the camera obscura. After Niepce's death, Daguerre continued experiments, eventually developing the daguerreotype process by 1839. This process involved polishing a silver-coated copper plate, fuming it with iodine, exposing it in a camera, and developing the latent image with mercury fumes, then fixing it with a hypo solution. The daguerreotype was then typically sealed in a case to prevent tarnishing.

Simultaneously, William Henry Fox Talbot in England was experimenting with silver chloride on paper. Inspired by his inability to draw with a camera lucida, he sought a way to make images within a camera obscura. He developed 'photogenic drawings' using salt and silver nitrate-coated paper. Crucially, Talbot discovered how to fix these images to prevent further darkening by using a stronger salt water solution. He later improved the process with silver iodide, inventing the calotype in 1840, which allowed for the creation of negative images that could then be used to print multiple positive copies. This negative-positive process became the standard for photography until the digital age, establishing a rivalry between daguerreotype and calotype methods.

In 1851, Frederick Scott Archer invented the wet collodion process, which offered the detail of daguerreotypes with the reproducibility of negatives. This process involved coating a glass plate with collodion, sensitizing it in a silver bath, exposing it while wet, and developing it immediately. This allowed for sharp glass negatives that could produce thousands of paper prints, leading to mass production of photographs. The wet collodion process gained popularity by the late 1850s, largely replacing the daguerreotype, despite the logistical challenges of needing a portable darkroom.

Photography deeply influenced culture, becoming a primary means of remembering people and events. The rise of industrial photographic houses in the mid-19th century led to mass-produced images of tourist sites, fueling the idea that an experience wasn't complete without a photograph. The album and printing made photographs precise, detailed, cheap, and easily distributable, shaping and conveying information. Pictorialists like Alfred Stieglitz founded movements like the Photo-Secession to establish photography as a fine art form, emphasizing the artist's creative input.

The 1870s and 80s saw the development of gelatin silver materials, leading to manufactured photographic paper and flexible film. This 'one-step' process, primarily an English invention, combined bromide and silver in a gelatin solution, creating dry plates. This eliminated the need for immediate development in the field, allowing photographers to expose plates and develop them later. In 1888, George Eastman introduced the Kodak camera, making photography accessible to the general public with its 'you press the button, we do the rest' marketing. This portability allowed people to take cameras everywhere, significantly expanding the reach of photography.

The gelatin silver process became the dominant photographic method of the 20th century. Its clarity and sharpness made it the norm for photojournalism and documentary photography. Gelatin silver also underpinned motion pictures and color photography. Color photography, however, was initially seen as artificial, with black and white being associated with seriousness. The development of panchromatic black and white film (sensitized to all colors) was a prerequisite for true color photography. Frederic Ives was instrumental in this dye sensitizing. The chromogenic color process, pioneered by Mannes and Godowsky at Kodak in the 1930s with Kodachrome, used multiple gelatin layers to release dyes during development, removing silver and leaving a full-color image. This 'rocket science' process became predominant throughout the 20th century.

The shift from analog to digital photography gained momentum after 2004, marking a high watermark for film production. Steve Sasson built the first truly digital camera in 1975 using a CCD imager, storing images on magnetic tape for television display. A rapid timeline of digital camera advancements followed, from Kodak's megapixel sensor (1986) to consumer cameras like the Apple QuickTake 100 (1994) and the Kodak DC210 (1999). Today, smartphones make everyone a photographer. While digital photography has made images ubiquitous, it has also changed our relationship with physical objects and memory, as digital files are ephemeral and rarely printed. Some artists, however, are returning to hands-on, craft-based analog processes, valuing the physical object and the artist's intervention.