A darkroom is a workspace, usually a separate area in a building or a vehicle, made dark to allow photographers to use light-sensitive materials to develop film and photographic paper to make photographic prints. Darkrooms have been in use since the late 19th century for black and white photography. Using black and white film, photographers could control every step of the photographic process. This is a list of notable photographers in the art, documentary and fashion traditions. ... This article does not cite any references or sources. ... This article or section does not cite its references or sources. ... Until the advent of digital photographic processes, the sole meaning of Photographic Paper was paper coated with light-sensitive chemicals. ... Photography [fÓ™tÉ‘grÓ™fi:],[foÊŠtÉ‘grÓ™fi:] is the process of recording pictures by means of capturing light on a light-sensitive medium, such as a film or sensor. ... Alternative meaning: Nineteenth Century (periodical) (18th century — 19th century — 20th century — more centuries) As a means of recording the passage of time, the 19th century was that century which lasted from 1801-1900 in the sense of the Gregorian calendar. ...

Due to the complexity of processing colour film (see C-41 process) and printing color photographs, and to the rise, first of Polaroid technology and later digital photography, darkrooms are decreasing in popularity. This page list various photographic processes. ... C-41 is the name given to the process for developing a specific type of color print film used in photography and often to the type of film itself. ... Polaroid Corporation was founded in 1937 by Edwin H. Land. ... 10 MP Nikon D200 and a Nikon film scanner The Canon EOS 350D The Canon PowerShot A95 Digital photography, as opposed to film photography, uses electronic devices to record and capture the image as binary data. ...

The darkroom

The darkroom does not have to be completely dark when making black and white prints. Most black and white print papers are only sensitive to blue light, or to blue and green light, so black and white darkrooms feature a specially-made red or amber coloured light, known as a safelight. It enables the photographer to work in the light so they can see what they are doing, without exposing the paper. A low-intensity orange or yellow light can also be used, but these are less common than the red safelight. Colour print paper, on the other hand, is sensitive to all parts of the visible spectrum and therefore must be kept in complete darkness until the prints are properly fixed. There is however a very dim amber safelight that can be used in colour photography, but its so dim as to be of little use. For both colour or black and white paper, a "paper-safe" -- a light-proof box to safely store photographic paper not in use as opposed to the boxes and light-proof bags that the paper comes packaged in -- can be used. Safelight is light used in a photographic darkroom and is designed to filter out that part of the light spectrum to which the material in use is sensitive. ... Until the advent of digital photographic processes, the sole meaning of Photographic Paper was paper coated with light-sensitive chemicals. ...

Another use for a darkroom is to load film in and out of cameras, development spools, or film holders, which requires complete darkness. Lacking a darkroom, a photographer can make use of a changing bag, which is a small bag with sleeved arm holes specially designed to be completely light proof and used to prepare film prior to exposure or developing. A changing bag is a light safe (does not allow light to enter) bag used by photographers usually to remove film from its canister and put it into a developing tank. ...

Exposure and Development

Main article Photographic_processing

The heart of most darkrooms is the enlarger, an optical apparatus similar to a slide projector that projects the image of a negative down onto a base, and finely controls the focus, amount, and duration of light. On the base, a sheet of photographic paper, typically either Resin-coated or fibre-based paper, is exposed to the enlarged image from the negative. It has been suggested that this article or section be merged with photographic developer. ... Photographic Enlarger An enlarger is a specialized transparency projector used to produce photographic prints from film or glass negatives. ... Color, positive picture (A) and negative (B), monochrome positive picture (C) and negative (D) In photography, a negative may refer to 3 different things, although they are all related. ... Until the advent of digital photographic processes, the sole meaning of Photographic Paper was paper coated with light-sensitive chemicals. ... Until the advent of digital photographic processes, the sole meaning of Photographic Paper was paper coated with light-sensitive chemicals. ... Until the advent of digital photographic processes, the sole meaning of Photographic Paper was paper coated with light-sensitive chemicals. ...

During exposure, values in the image can be adjusted, most often by "dodging" (reducing the amount of light to a specific area of an image by selectively blocking light to it for part or all of the exposure time) and/or "burning" (giving additional exposure to specific area of an image by exposing only it while blocking light to the rest). After exposure, the photographic printing paper, which still appears blank, is ready to be processed. Dodging and burning are terms used in photography for a technique used during the printing process to manipulate the exposure of a photographic print. ...

Note that some photographers who use large format (usually defined as 4x5" and larger sized film) cameras do not necessarily need to enlarge an image, but are able to produce a same sized print by placing the negative directly on top of the paper, usually pressing it down tight with glass. This is known as a contact print. Large format describes photographic films, view cameras (including pinhole cameras) and processes that use a film or digital sensor the size of 4 x 5 inches or larger. ... Contact prints are the worst part of photography. ...

The paper that has been exposed by enlargement or by contact exposure needs to then be processed in order to become a permanent, viewable print.

For black-and-white images, this process is comprised at a minimum of four chemical steps: (1) development of the print in a photographic developer; (2) stopping of image development by water rinse or use of special stop bath); (3) "fixing" (making the image permanent and removing its light-sensitivity) of the image in a photographic fixer; then (4) washing of the print in order to remove the processing chemicals. This is followed by drying the print. There are a variety of other, additional steps a photographer may take, such as toning. In film developing, photographic developer (or just developer) is a chemical that makes the latent image on the film or print visible. ... Stop bath is the second of three chemical baths usually used in processing traditional black-and-white photographic films, plates, and paper. ... Photographic fixer is a chemical used in the final step in the photographic processing of film or paper. ... It has been suggested that this article or section be merged with photographic developer. ...

It is possible to simulate the effects mentioned above by using programs such as Adobe Photoshop.

See also

• Photographic plate
• Stop bath
• List of photographic processes
• Photographic studio

Photographic plates were one of the earliest forms of photographic film, in which a light-sensitive emulsion of silver salts was applied to a glass plate. ... Stop bath is the second of three chemical baths usually used in processing traditional black-and-white photographic films, plates, and paper. ... This page list various photographic processes. ... A photographic studio is both a workspace and a corporate body. ...

External links

• Instructions for Setting Up A Darkroom in Your Home
• Black and white darkroom resource center
• Darkroom safety
• Darkroom Discussion
• A collection of chemical recipes for the darkroom