Applications
A key application of dodging and burning is to improve contrast (tonal reproduction) in film print-making; today this is better known as tone mapping in digital photography – see high-dynamic-range imaging. The technical issue is that natural scenes have higher dynamic range (ratio of light to dark) than can be captured by film, which in turn is greater than can be reproduced in prints. Compressing this high dynamic range into a print either requires uniformly decreasing contrast (making tones closer together) or carefully printing different parts of an image differently so that each retains the maximum contrast – in this latter dodging and burning is a key tool.
An excellent example is the photograph Schweitzer with lamp at his desk by W. Eugene Smith, [2] from his 1954 photo essay A Man of Mercy on Dr. Albert Schweitzer and his humanitarian work in French Equatorial Africa. The image took 5 days to produce, in order to reproduce the tonal range of the scene, which ranges from a bright lamp (relative to the scene) to dark shadow. [3]
Ansel Adams elevated dodging and burning to an art form. Many of his famous prints were manipulated in the darkroom with these two techniques. Adams wrote a comprehensive book on producing prints called The Print( Adams 1995 ), which features dodging and burning prominently, in the context of his Zone System.
They can also be used in less subtle ways, as in the stenciled lettering shown at the top of this article.
Ansel Easton Adams was an American landscape photographer and environmentalist known for his black-and-white images of the American West. He helped found Group f/64, an association of photographers advocating "pure" photography which favored sharp focus and the use of the full tonal range of a photograph. He and Fred Archer developed an exacting system of image-making called the Zone System, a method of achieving a desired final print through a deeply technical understanding of how tonal range is recorded and developed during exposure, negative development, and printing. The resulting clarity and depth of such images characterized his photography.
In photography, exposure is the amount of light per unit area reaching a frame of photographic film or the surface of an electronic image sensor, as determined by shutter speed, lens aperture, and scene luminance. Exposure is measured in lux seconds, and can be computed from exposure value (EV) and scene luminance in a specified region.
In photography and videography, HDR or high-dynamic-range imaging is the set of techniques used to reproduce a greater range of luminosity than that which is possible with standard photographic techniques. Standard techniques allow differentiation only within a certain range of brightness. Outside this range, no features are visible because in the brighter areas everything appears pure white, and pure black in the darker areas. The ratio between the maximum and the minimum of the tonal value in an image is known as the dynamic range. HDR is useful for recording many real-world scenes containing very bright, direct sunlight to extreme shade, or very faint nebulae. High-dynamic-range (HDR) images are often created by capturing and then combining several different, narrower range, exposures of the same subject matter.
Pure photography or straight photography refers to photography that attempts to depict a scene or subject in sharp focus and detail, in accordance with the qualities that distinguish photography from other visual media, particularly painting. Originating as early as 1904, the term was used by critic Sadakichi Hartmann in the magazine Camera Work, and later promoted by its editor, Alfred Stieglitz, as a more pure form of photography than Pictorialism. Once popularized by Stieglitz and other notable photographers, such as Paul Strand, it later became a hallmark of Western photographers, such as Edward Weston, Ansel Adams and others.
In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject appear darkest and the darkest areas appear lightest. This reversed order occurs because the extremely light-sensitive chemicals a camera film must use to capture an image quickly enough for ordinary picture-taking are darkened, rather than bleached, by exposure to light and subsequent photographic processing.
A darkroom is used to process photographic film, to make prints and to carry out other associated tasks. It is a room that can be made completely dark to allow the processing of the light-sensitive photographic materials, including film and photographic paper. Various equipment is used in the darkroom, including an enlarger, baths containing chemicals, and running water.
In art, craft, and engineering, masking is the use of materials to protect areas from change, or to focus change on other areas. This can describe either the techniques and materials used to control the development of a work of art by protecting a desired area from change; or a phenomenon that causes a sensation to be concealed from conscious attention.
Unsharp masking (USM) is an image sharpening technique, first implemented in darkroom photography, but now commonly used in digital image processing software. Its name derives from the fact that the technique uses a blurred, or "unsharp", negative image to create a mask of the original image. The unsharp mask is then combined with the original positive image, creating an image that is less blurry than the original. The resulting image, although clearer, may be a less accurate representation of the image's subject.
An enlarger is a specialized transparency projector used to produce photographic prints from film or glass negatives, or from transparencies.
A contact print is a photographic image produced from film; sometimes from a film negative, and sometimes from a film positive or paper negative. In a darkroom an exposed and developed piece of film or photographic paper is placed emulsion side down, in contact with a piece of photographic paper, light is briefly shone through the negative or paper and then the paper is developed to reveal the final print.
The Zone System is a photographic technique for determining optimal film exposure and development, formulated by Ansel Adams and Fred Archer. Adams described the Zone System as "[...] not an invention of mine; it is a codification of the principles of sensitometry, worked out by Fred Archer and myself at the Art Center School in Los Angeles, around 1939–40."
The Sabattier effect, also known as pseudo-solarization, is a phenomenon in photography in which the image recorded on a negative or on a photographic print is wholly or partially reversed in tone. Dark areas appear light or light areas appear dark. Solarization and pseudo-solarization are quite distinct effects. Over time, the "pseudo" has been dropped in many photographic darkroom circles and discussions, but the effect that is meant is the Sabattier effect and not the solarization by extreme overexposure.
Tone mapping is a technique used in image processing and computer graphics to map one set of colors to another to approximate the appearance of high-dynamic-range images in a medium that has a more limited dynamic range. Print-outs, CRT or LCD monitors, and projectors all have a limited dynamic range that is inadequate to reproduce the full range of light intensities present in natural scenes. Tone mapping addresses the problem of strong contrast reduction from the scene radiance to the displayable range while preserving the image details and color appearance important to appreciate the original scene content.
In the theory of photography, tone reproduction is the mapping of scene luminance and color to print reflectance or display luminance, with the aim of subjectively "properly" reproducing brightness and "brightness differences".
Photographic film is a strip or sheet of transparent film base coated on one side with a gelatin emulsion containing microscopically small light-sensitive silver halide crystals. The sizes and other characteristics of the crystals determine the sensitivity, contrast, and resolution of the film.
In cinematography and photography, flashing is the exposure of the film or digital sensors to uniform light prior to exposing it to the scene. It is used as a method of contrast control to bring out detail in darker areas. This adds a bias to the overall light input recorded by the sensor. When used for artistic effects, it can be used to add a colour cast to shadows without significantly affecting highlights. Flashing is usually described as a percentage of exposure increase to the film's base fog level. While the flash itself is often a neutral color temperature, the flash exposure could be any color: the color of the flash will be imbued disproportionately into the shadows of the image.
Darkroom manipulation is a traditional method of manipulating photographs without the use of computers. Some of the common techniques for darkroom manipulation are dodging, burning, and masking, which though similar conceptually to digital manipulations, involve physical rather than virtual techniques. Darkroom manipulations are those processes used, for example, to remove unwanted areas and change image background, among others. Varying techniques can be used to accomplish the same tasks.
Taos Pueblo is a book by Ansel Adams and Mary Hunter Austin. Originally published in 1930, it is the first book of Adams' photographs. A seminal work in his career, it marks the beginning of a transition from his earlier pictorialist style to his signature sharp-focused images of the Western landscape. It has been described as "an astonishingly poignant…masterpiece" and "the greatest pictorial representation of the American West."
Ray McSavaney was an American fine-art photographer based in Los Angeles, California. Throughout a spartan but active life, practicing classical Western black and white fine art photography, he made enduring photographs of buildings, bridges, and street scenes of the vast city, ancient ruins and panoramic vistas of the Southwest, and studio setups with varied floral subjects. He passed away from lymphoma in Los Angeles Veteran's Hospital. Warm tributes to his life and career by some of his close friends and colleagues appear in a ‘celebration of life’ memorial recounted in ‘View Camera’ magazine.
Monolith, the Face of Half Dome, Yosemite National Park, California is a black and white film photograph taken by Ansel Adams in 1927 that depicts the western face of Half Dome in Yosemite, California. In the foreground of the photo, viewers are able to see the texture and detail of the rock as well as the background landscape of pine trees and the Tenaya Peak. Monolith was used by the Sierra Club as a visual aid for the environmental movement, and was the first photograph Adams made that was based on feelings, a concept he would come to define as visualization and prompt him to create the Zone System. The image stands as a testament to the intense relationship Adams had with the landscape of Yosemite, as his career was largely marked by photographing the park. Monolith has also physically endured the test of time as the original film negative and glass plate are still intact and printable. The photograph is a part of the portfolio Parmelian Prints of the High Sierras, released in 1927.
