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Negative (photography)

 
Negative (photography)

 
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Negative (photography)
 
 
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In photography, a negative may refer to three different things, although they are all related.

Film
Photographic film

Photographic film is a sheet of plastic coated with an emulsion containing light-sensitive silver halide salts with variable crystal sizes that determine the sensitivity, contrast and of the film....
, for 35mm cameras comes in long narrow strips of chemical-coated plastic. As each image is captured by the camera onto the film strip, the film strip advances so that the next image is projected onto unexposed film.






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Pozytyw I Negatyw
In photography, a negative may refer to three different things, although they are all related.

A negative

Film
Photographic film

Photographic film is a sheet of plastic coated with an emulsion containing light-sensitive silver halide salts with variable crystal sizes that determine the sensitivity, contrast and of the film....
, for 35mm cameras comes in long narrow strips of chemical-coated plastic. As each image is captured by the camera onto the film strip, the film strip advances so that the next image is projected onto unexposed film. When the film is developed it is a long strip of small negative images. This strip is often cut into sections for easier handling. In larger cameras this piece of film may be as large as a full sheet of paper, or even larger, with a single image captured onto one piece. Each of these negative images may be referred to as a negative and the entire strip or set of images may be collectively referred to as negatives. These negative images are the master images, from which all other copies will be made, and they are treated with care and handled with caution.

Negative image

A positive image is a normal image. A negative image is a tonal inversion of a positive image, in which light areas appear dark and vice versa. A negative color image is additionally color reversed, with red areas appearing cyan, greens appearing magenta and blues appearing yellow.

Negative film

Many photographic processes create negative images: the chemicals involved react when exposed to light, and during developing these exposed chemicals are retained and become opaque while the unexposed chemicals are washed away. However, when a negative image is created from a negative image (just like multiplying two negative numbers in mathematics) a positive image results (see Color print film
Color print film

Color print film is the most common type of photographic film in consumer use. Print film produces a Negative when it is developed, requiring it to be reversed again when it is printed on to photographic paper....
, C-41 process
C-41 process

C-41 is a color print film developing process. C-41, also known as CN-16 by Fuji, CNK-4 by Konica, and AP-70 by AGFA, is the most popular film process in use, with most photofinishing labs devoting at least one machine to this development process....
). This makes most chemical based photography a two step process. These are called negative films and processes. Special films and development processes have been devised such that positive images can be created directly from film; these are called positive, or slide, or (perhaps confusingly) reversal film (see Transparency
Transparency (photography)

In photography, a reversal film is a type of photographic film that produces a positive image on a Transparency base. The film is processed to produce transparencies, in contrast with negative and photographic printing....
, Black and white reversal film, E-6 process
E-6 process

The E-6 process is a photographic processing system for developing Ektachrome, Fujichrome, and other transparency photographic film.Unlike some other color reversal processes that produce positive transparencies, E-6 process can be done manually by amateurs with the same equipment that is used for processing black and white negative fil...
).

See also

  • Eastman Color Negative
    Eastman Color Negative

    Eastman Color Negative, specifically abbreviated as ECN, is a photographic processing system created by Kodak in the 1950s for the development of monopack color film film stock....
  • Enlarger
    Enlarger

    An enlarger is a specialised transparency projector used to produce Photography prints from film or glass Negative using the gelatin-silver process, or reversal film....
  • Keykode
    Keykode

    Introduced in 1990, Keykode is an Eastman Kodak Company advancement on edge code, which are letters, numbers and symbols placed at regular intervals along the edge of 35 mm and 16 mm film to allow for frame-by-frame specific identification....
  • Negative cutting
    Negative cutting

    Negative Cutting is the process of cutting motion picture negative to match precisely the final edit as specified by the film editor. Original camera negative is cut with scissors and joined using a film splicer and film cement....
  • Photography
    Photography

    Photography is the process, activity and art of creating still or moving by recording radiation on a sensitive medium, such as a photographic film, or an ....
  • Polarization
    Polarization

    Polarization is a property of waves that describes the orientation of their oscillations. For transverse waves such as many electromagnetic waves, it describes the orientation of the oscillations in the plane perpendicular to the wave's direction of travel....
  • Solarization
    Solarization

    Solarization refers to a phenomenon in physics where a material undergoes a temporary change in colour after being subjected to high energy electromagnetic radiation, such as ultraviolet light or X-rays....


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