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Underwater photography



Underwater photography is the process of taking photographs while under water. It is usually done while scuba diving, but can be done while snorkeling or swimming.

Underwater imaging is considered an especially challenging area of photography, since it requires very specialized equipment and techniques to be successful. Despite these challenges, it offers the possibility of many exciting and rare photographic opportunities. Animals such as fish and marine mammals are the most common subjects, but photographers also pursue shipwrecks, submerged cave systems, underwater "landscapes", and portraits of fellow divers.
The primary obstacle faced by underwater photographers is the extreme loss of color and contrast when submerged to any significant depth. The longer wavelengths of sunlight (such as red or orange) are absorbed quickly by the surrounding water, so even to the naked eye everything appears blue-green in color. The loss of color not only increases vertically through the water column, but also horizontally, so subjects further away from the camera will also appear colorless and indistinct. This effect is true even in apparently clear water, such as that found around tropical coral reefs.

Wide-angle shot of coral reef in East Timor
Underwater photographers solve this problem by combining two techniques. The first is to get the camera as close to the photographic subject as possible, minimizing the horizontal loss of color. This is best achieved by using wide-angle lenses, which allow very close focus, or macro lenses, where the subject is often only inches away from the camera. In practical terms, serious underwater photographers consider any more than about 3 ft/1 m of water between camera and subject to be unacceptable. The second technique is the use of flash to restore any color lost vertically through the water column. Fill-flash, used effectively, will "paint" in any missing colors by providing full-spectrum visible light to the overall exposure.
Since underwater photography is often performed while scuba diving, it is important that the diver-photographer be sufficiently skilled so that it remains a reasonably safe activity. Good scuba technique also has an impact on the quality of images, since marine life is less likely to be scared away by a calm diver, and the environment is less likely to be damaged or disturbed. There is the possibility of encountering poor conditions, such as heavy currents, tidal flow, or poor visibility. Generally, underwater photographers try to avoid these situations whenever possible.

Wildlife photography




Wildlife photography is the act of taking photographs of wildlife.

A 500mm Telephoto Lens, rigged with flash and monopod: a setup used for taking wildlife photographs.
Wildlife photography is regarded as being one of the more challenging forms of photography. As well as needing sound technical skills, such as being able to expose correctly, wildlife photographers generally need good field craft skills. For example, some animals are difficult to approach and thus a knowledge of the animal's behaviour is needed in order to be able to predict their actions. Photographing some species may require stalking skills or the use of a hide/blind for concealment.
Whilst wildlife photographs can be taken using basic equipment, successful photography of some types of wildlife requires specialist equipment, such as macro lenses for insects, long focal length lenses for birds and underwater cameras for marine life. However, since the advent of digital cameras, greater adventure travel and automated cameras, a great wildlife photograph can also be the result of being in the right place at the right time.


Landscape Photography

Though water, animal and plant photography are all generally self-explanatory, it is helpful to have a working definition that allows for a more concrete understanding of the philosophies, and how they relate to the other forms of nature photography. Water photography includes both those shots done above and below the surface of the water. When the camera is above the water it is tempting to consider the picture a scenic photograph. However, there is slight debate as to whether this provides an accurate definition; or rather, should it be considered in a more straightforward way such as a seascape. In either case, as with all the forms, the focus remains on nature and how to capture the exact image of nature on film.
Nature photography lends itself to many different subtleties and nuances that can cause confusing and juxtaposing classifications. However, at the root of all pictures of nature lies the photographer’s intention of capturing nature in its actual state and habitat, emphasizing the way nature lives. At Imagekind, you will see all different forms of photography all available for print that can add a unique and natural aspect of your favorite natural image.

Nature Photography

Nature photography has always been a very popular genre for fine art photographers. Though it often proves difficult to categorize, as it does include many different forms, such as scenic landscapes, underwater scenes, plants and animals, just to name some of the major groups. All of these fall under the overarching description of nature, but can also be classified in their own independent genres. Though they are all different and unique in their own way, they also include many similarities and share related aspects in not only their content, but form as well. Obviously, the main similarity between these groupings is that they all depict the beauty of nature, but beyond that, the similarities also lie within the philosophies behind such camera work.
Scenic, or landscape photography, usually includes expansive views of natural backgrounds that usually include many of the other elements mentioned above. For example, it is common to see plants, such as trees and flowers, within scenic pictures. Though it is less common to see animals, because it takes away from the actual landscape, it is still possible, and does not automatically disqualify it from the scenic title.

Photography and law

Photography tends to be protected by the law through copyright and moral rights. Photography tends to be restricted by the law through miscellaneous criminal offences. Publishing certain photographs can be restricted by privacy law. Photography of certain subject matter can be generally restricted in the interests of public morality and the protection of children.

Legal restrictions on photography:

Amsterdam,Holland. Photo by Gary Mark Smith.
In general under the law of the United Kingdom one cannot prevent photography of private property from a public place, and in general the right to take photographs on private land upon which permission has been obtained is similarly unrestricted. However a landowner is permitted to impose any conditions they wish upon entry to a property, such as forbidding or restricting photography. Two public locations in the UK, Trafalgar Square and Parliament Square have a specific provision against photography for commercial purposes,[1] and permission is needed to photograph or film in the Royal Parks.[2]
Persistent or aggressive photography of a single individual may come under the legal definition of harassment.[3]
It is a criminal offence (contempt) to take a photograph in any court of any person, being a judge of the court or a juror or a witness in or a party to any proceedings before the court, whether civil or criminal, or to publish such a photograph. This includes photographs taken in a court building, or the precincts of the court.[4] Taking a photograph in a court can be seen as a serious offence, leading to a prison sentence.[5][6] The prohibition on taking photographs in the precincts is vague. It was designed to prevent the undermining of the dignity of the court, through the exploitation of images in low brow 'picture papers'.[7]
Photography of certain subject matter is restricted in the United Kingdom. In particular, the Protection of Children Act 1978 restricts making child pornography or what looks like child pornography.
It is an offence under the Counter-Terrorism Act 2008 to publish or communicate a photograph of a constable (not including PCSOs), a member of the armed forces, or a member of the security services, which is of a kind likely to be useful to a person committing or preparing an act of terrorism. There is a defence of acting with a reasonable excuse, however the onus of proof is on the defence, under section 58A of the Terrorism Act 2000. A PCSO cited Section 44 of the Terrorism Act 2000 to prevent a member of the public photographing them. Section 44 actually concerns stop and search powers.[8]
It is also an offence under section 58 of the Terrorism Act 2000 to take a photograph of a kind likely to be useful to a person committing or preparing an act of terrorism, or possessing such a photograph. There is an identical defence of reasonable excuse. This offence (and possibly, but not necessarily the s.58A offence) covers only a photograph as described in s.2(3)(b) of the Terrorism Act 2006. As such, it must be of a kind likely to provide practical assistance to a person committing or preparing an act of terrorism. Whether the photograph in question is such is a matter for a jury, which is not required to look at the surrounding circumstances. The photograph must contain information of such a nature as to raise a reasonable suspicion that it was intended to be used to assist in the preparation or commission of an act of terrorism. It must call for an explanation. A photograph which is innocuous on its face will not fall foul of the provision if the prosecution adduces evidence that it was intended to be used for the purpose of committing or preparing a terrorist act. The defence may prove a reasonable excuse simply by showing that the photograph is possessed for a purpose other than to assist in the commission or preparation of an act of terrorism, even if the purpose of possession is otherwise unlawful.[9]
Copyright:
Copyright can subsist in an original photograph, i.e. a recording of light or other radiation on any medium on which an image is produced or from which an image by any means be produced, and which is not part of a film.[10] Whilst photographs are classified as artistic works, the subsistence of copyright does not depend on artistic merit.[10] The owner of the copyright in the photograph is the photographer - the person who creates it,[11] by default.[12] However, where a photograph is taken by an employee in the course of employment, the first owner of the copyright is the employer, unless there is an agreement to the contrary.[13]
Copyright which subsists in a photograph protects not merely the photographer from direct copying of his work, but also from indirect copying to reproduce his work, where a substantial part of his work has been copied.
Copyright in a photograph lasts for 70 years from the end of the year in which the photographer dies.[14] A consequence of this lengthy period of existence of the copyright is that many family photographs which have no market value, but significant emotional value, remain subject to copyright, even when the original photographer cannot be traced, has given up photography, or died. In the absence of a licence, it will be an infringement of copyright in the photographs to copy them.[15] As such, scanning old family photographs to a digital file for personal use is prima facie an infringement of copyright.
Certain photographs may not be protected by copyright. Section 171(3) of the Copyright, Designs and Patents Act 1988 gives courts jurisdiction to refrain from enforcing the copyright which subsists in works on the grounds of public interest.
Immoral works:
Many cases in which this has been the case in respect of sexual immorality can be found. For example, in Stockdale v Onwhyn, the memoirs of a courtesan were denied protection. However, it is notable that these cases tend to be quite old, and were decided in the context of a relatively homogeneous, religious and conservative society. Stockdale v Onwhyn was, for example, decided in 1826. Similarly, in Glyn v Weston Feature Film Co (1915), the plaintiff's sexually explicit novel was adapted into a film. The plaintiff sued for copyright infringement, but the court refused to award an injunction or an account of profits. The court took the view that the book lacked literary merit.[16] The court found that the work in question was "grossly immoral in its essence, in its treatment, and in its tendency. Stripped of its trappings, which are mere accident, it is nothing more nor less than a sensual adulterous intrigue." As such, the court refused to enforce a copyright in the work.
As such, it is open to a court to find that a photograph is immoral, and, as such not enforce copyright which subsists in it. However, in a modern, heterogeneous and largely secular society which values diversity in creative works, a judge, in full awareness of his limited capacity to assess the public interest, may be reluctant to find that a work is sufficiently immoral as to warrant the denial of copyright protection. Nonetheless, it is possible to think of works which may nonetheless activate the court's discretion in such a manner, such as child pornography or posed images of nonconsensual torture.
The somewhat ironic practical effect of the court refusing to enforce copyright is not to ban the work in question. Instead, it prevents the copyright holder from preventing others from dealing with the work in a manner which is normally restricted to the copyright holder. As such, in Glyn, the court did not stop the film maker from profiting from the film.
Public interest generally:
The restriction of the ability to deal with a work in certain ways to the copyright holder can have the effect of providing a legally sanctioned cloak to information. Hypothetically, a cult could use the law of copyright to prevent distribution of their texts, thus protecting the cult from mockery. The court recognises that there is a right to freedom of expression. This has been interpreted to involve the ability to express oneself, and also the ability to receive information. As such, Hyde Park Residence Ltd v Yelland (2000), the Court of Appeal accepted that the public interest could require that copyright not be enforced, where it was in the public interest that the information be distributed. In that case, a security company had sued a newspaper for copyright infringement, when the newspaper published still images of a meeting between Diana, Princess of Wales and Dodi Al-Fayed, shortly before the former's death. On the facts, however, the public interest defence failed. It was found that the public interest did not, in that particular case, necessitate the publication of the photographs themselves. Publication of the information contained within them would have satisfied the demands of the public interest.
Infringement:
Infringement of the copyright which subsists in a photograph can be performed though copying the photograph. This is because the owner of the copyright in the photograph has the exclusive right to copy the photograph.[17] For there to be infringement of the copyright in a photograph, there must be copying of a substantial part of the photograph.[18] A photograph can also be a mechanism of infringement of the copyright which subsists in another work. For example, a photograph which copies a substantial part of an artistic work, such as a sculpture, painting, architectural work (building) or another photograph (without permission) would infringe the copyright which subsists in those works.

The Radcliffe Camera, built 1737-1749, holds books from the Bodleian Library
Because the right infringed is the exclusive right to copy, there must be copying, as opposed to independent recreation of a substantial part. For example, a tourist may take a photograph which is for all intents and purposes identical to the picture on the right. However, if the tourist's photograph happens to be of the same scene, but not a copy of the Wikipedia photograph, the tourist would not be infringing copyright. (The building, an architectural work, is from the 1700s, and as such, copyright does not subsist in it). Since the photograph is an artistic work, irrespective of artistic merit, copyright will protect the subject of the photograph rather than merely the medium. As such, it is possible to infringe the copyright in a photograph through non-literal copying. In Bauman v Fussell, for example, the Court of Appeal held by majority that a painting which copied the arrangement of two cocks from a photograph infringed the copyright which subsisted in the photograph.
However, the subject matter of a photograph is not necessarily subject to an independent copyright. For example, in the Creation Records case,[19][20] a photographer, attempting to create a photograph for an album cover, set up an elaborate and artificial scene. A photographer from a newspaper covertly photographed the scene and published it in the newspaper. The court held that the newspaper photographer did not infringe the official photographer's copyright. Copyright did not subsist in the scene itself - it was too temporary to be a collage, and could not be categorised as any other form of artistic work.
The protection of photographs in this manner has been criticised on two grounds.[21] Firstly, it is argued that photographs should not be protected as artistic works, but should instead be protected in a manner similar to that of sound recordings and films. In other words, copyright should not protect the subject matter of a photograph as a matter of course as a consequence of a photograph being taken.[22] It is argued that protection of photographs as artistic works is anomalous, in that photography is ultimately a medium of reproduction, rather than creation. As such, it is more similar to a film, or sound recording than a painting or sculpture. Some photographers share this view. For example, Michael Reichmann describes photography as an art of disclosure, as opposed to an art of inclusion.[23] Secondly, it is argued that the protection of photographs as artistic works leads to bizarre results.[21] Subject matter is protected irrespective of the artistic merit of a photograph. The subject matter of a photograph is protected even when it is not deserving of protection. For example, it is possible that Vogue Magazine would be infringing copyright if they, inspired by a picture taken by a drunk boyfriend of his girlfriend posing provocatively on a motorcycle, attempted to recreate the photograph. Similarly, it is possible that a famous wildlife photographer, inspired by a cheap snapshot of cheetah at the zoo, on Flikr, would be infringing copyright if he went exploring the Okovango Delta in search of a cheetah in a similar pose. For copyright to subsist in photographs as artistic works, the photographs must be original, since the English test for originality is based on skill, labour and judgement.[21] That said, it is possible that the threshold of originality is very low. For example, in Walter v Lane, reporters who transcribed a speech were held to be authors of the transcription, and owners of a copyright which subsisted in it. Essentially, by this, Arnold is arguing that whilst the subject matter of some photographs may deserve protection, it is inappropriate for the law the presume that the subject matter of all photographs is deserving of protection.
It is possible to say with a high degree of confidence that photographs of three-dimensional objects, including artistic works, will be treated by a court as themselves original artistic works, and as such, will be subject to copyright.[24] It is likely that a photograph (including a scan - digital scanning counts as photography for the purposes of the Copyright Designs and Patents Act 1988) of a two dimensional artistic work, such as another photograph or a painting will also be subject to copyright if a significant amount of skill, labour and judgement went into its creation.[25] As such, the photograph above of the Radcliffe Camera would be subject to copyright. Similarly, based on the latter conclusion, it is likely, for example, that if Wikipedia hosted a scan of, for example, the Magna Carta, on a UK server, and the scan required skill, labour and judgement, in handling the document and processing the digital file, Wikipedia would, if it did not have a licence, be infringing the scanner's copyright.
Photography and privacy:
A right to privacy exists in the UK law, as a consequence of the incorporation of the European Convention on Human Rights into domestic law through the Human Rights Act 1998. This can result in restrictions on the publication of photography.[26][27][28][29][30]
Whether this right is caused by horizontal effect of the Human Rights Act 1998 or is judicially created is a matter of some controversy.[31] The right to privacy is protected by Article 8 of the convention. In the context of photography, it stands at odds to the Article 10 right of freedom of expression. As such, courts will consider the public interest in balancing the rights through the legal test of proportionality.[32]
A very limited statutory right to privacy exists in the Copyright Designs and Patents Act 1988. This right is held, for example, by someone who hires a photographer to photograph their wedding. The commissioner[33], irrespective of any copyright which he does or does not hold in the photograph[33] of a photograph which was commissioned for private and domestic purposes, where copyright subsists in the photograph, has the right not to have copies of the work issued to the public,[34] the work exhibited in public[35] or the work communicated to the public.[36] However, this right will not be infringed if the rightholder gives permission. It will not be infringed if the photograph is incidentally included in an artistic work, film, or broadcast.[37]

Social and cultural implications

There are many ongoing questions about different aspects of photography. In her writing "On Photography" (1977), Susan Sontag discusses concerns about the objectivity of photography. This is a highly debated subject within the photographic community.[16] Sontag argues, "To photograph is to appropriate the thing photographed. It means putting one’s self into a certain relation to the world that feels like knowledge, and therefore like power."[17] Photographers decide what to take a photo of, what elements to exclude and what angle to frame the photo, and these factors may reflect a particular socio-historical context. Along these lines it can be argued that photography is a subjective form of representation.
Modern photography has raised a number of concerns on its impact on society. In Alfred Hitchcock's Rear Window (1954), the camera is presented as a promoter of voyeuristic inhibitions. 'Although the camera is an observation station, the act of photographing is more than passive observing'.[17] Michal Powell's Peeping Tom (1960) portrays the camera as both sexual and sadistically violent technology that literally kills in this picture and at the same time captures images of the pain and anguish evident on the faces of the female victims.[citation needed]
"The camera doesn't rape or even possess, though it may presume, intrude, trespass, distort, exploit, and, at the farthest reach of metaphor, assassinate - all activities that, unlike the sexual push and shove, can be conducted from a distance, and with some detachment."[17]
Photography is one of the new media forms that changes perception and changes the structure of society.[18] Further unease has been caused around cameras in regards to desensitization. Fears that disturbing or explicit images are widely accessible to children and society at large have been raised. Particularly, photos of war and pornography are causing a stir. Sontag is concerned that "to photograph is to turn people into objects that can be symbolically possessed." Desensitization discussion goes hand in hand with debates about censored images. Sontag writes of her concern that the ability to censor pictures means the photographer has the ability to construct reality.[17]
One of the practices through which photography constitutes society is tourism. Tourism and photography combine to create a "tourist gaze"[19] in which local inhabitants are positioned and defined by the camera lens. However, it has also been argued that there exists a "reverse gaze"[20] through which indigenous photographees can position the tourist photographer as a shallow consumer of images.

Other image forming techniques

Besides the camera, other methods of forming images with light are available. For instance, a photocopy or xerography machine forms permanent images but uses the transfer of static electrical charges rather than photographic film, hence the term electrophotography. Photograms are images produced by the shadows of objects cast on the photographic paper, without the use of a camera. Objects can also be placed directly on the glass of an image scanner to produce digital pictures.

Modes of production












Amateur


An amateur photographer is one who practices photography as a hobby and not for profit. The quality of some amateur work is comparable or superior to that of many professionals and may be highly specialized or eclectic in its choice of subjects. Amateur photography is often pre-eminent in photographic subjects which have little prospect of commercial use or reward.




Commercial





Commercial photography is probably best defined as any photography for which the photographer is paid for images rather than works of art. In this light money could be paid for the subject of the photograph or the photograph itself. Wholesale, retail, and professional uses of photography would fall under this definition. The commercial photographic world could include:
Advertising photography: photographs made to illustrate and usually sell a service or product. These images, such as packshots, are generally done with an advertising agency, design firm or with an in-house corporate design team.
Fashion and glamour photography: This type of photography usually incorporates models. Fashion photography emphasizes the clothes or product, glamour emphasizes the model. Glamour photography is popular in advertising and in men's magazines. Models in glamour photography may be nude, but this is not always the case.
Crime Scene Photography: This type of photography consists of photographing scenes of crime such as robberies and murders. A black and white camera or an infrared camera may be used to capture specific details.
Still life photography usually depicts inanimate subject matter, typically commonplace objects which may be either natural or man-made.
Food photography can be used for editorial, packaging or advertising use. Food photography is similar to still life photography, but requires some special skills.
Editorial photography: photographs made to illustrate a story or idea within the context of a magazine. These are usually assigned by the magazine.
Photojournalism: this can be considered a subset of editorial photography. Photographs made in this context are accepted as a documentation of a news story.
Portrait and wedding photography: photographs made and sold directly to the end user of the images.
Landscape photography: photographs of different locations.
Wildlife photography that demonstrates life of the animals.
Photo sharing: publishing or transfer of a user's digital photos online.
Paparazzi
The market for photographic services demonstrates the aphorism "A picture is worth a thousand words", which has an interesting basis in the history of photography. Magazines and newspapers, companies putting up Web sites, advertising agencies and other groups pay for photography.
Many people take photographs for self-fulfillment or for commercial purposes. Organizations with a budget and a need for photography have several options: they can employ a photographer directly, organize a public competition, or obtain rights to stock photographs. Photo stock can be procured through traditional stock giants, such as Getty Images or Corbis; smaller microstock agencies, such as Fotolia; or web marketplaces, such as Cutcaster.


Art


During the twentieth century, both fine art photography and documentary photography became accepted by the English-speaking art world and the gallery system. In the United States, a handful of photographers, including Alfred Stieglitz, Edward Steichen, John Szarkowski, F. Holland Day, and Edward Weston, spent their lives advocating for photography as a fine art. At first, fine art photographers tried to imitate painting styles. This movement is called Pictorialism, often using soft focus for a dreamy, 'romantic' look. In reaction to that, Weston, Ansel Adams, and others formed the Group f/64 to advocate 'straight photography', the photograph as a (sharply focused) thing in itself and not an imitation of something else.
The aesthetics of photography is a matter that continues to be discussed regularly, especially in artistic circles. Many artists argued that photography was the mechanical reproduction of an image. If photography is authentically art, then photography in the context of art would need redefinition, such as determining what component of a photograph makes it beautiful to the viewer. The controversy began with the earliest images "written with light"; Nicéphore Niépce, Louis Daguerre, and others among the very earliest photographers were met with acclaim, but some questioned if their work met the definitions and purposes of art.
Clive Bell in his classic essay Art states that only "significant form" can distinguish art from what is not art.
There must be some one quality without which a work of art cannot exist; possessing which, in the least degree, no work is altogether worthless. What is this quality? What quality is shared by all objects that provoke our aesthetic emotions? What quality is common to Sta. Sophia and the windows at Chartres, Mexican sculpture, a Persian bowl, Chinese carpets, Giotto's frescoes at Padua, and the masterpieces of Poussin, Piero della Francesca, and Cezanne? Only one answer seems possible - significant form. In each, lines and colors combined in a particular way, certain forms and relations of forms, stir our aesthetic emotions
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Science and forensics








The camera has a long and distinguished history as a means of recording phenomena from the first use by Daguerre and Fox-Talbot, such as astronomical events (eclipses for example), small creatures and plants when the camera was attached to the eyepiece of microscopes (in photomicroscopy) and for macro photography of larger specimens. The camera also proved useful in recording crime scenes and the scenes of accidents, such as the Wootton bridge collapse in 1861 and the Staplehurst rail crash of 1865. One of the first systematic applications occurred at the scene of the Tay Rail Bridge disaster of 1879. The court, just a few days after the accident, ordered James Valentine of Dundee to record the scene using both long distance shots and close-ups of the debris. The set of over 50 accident photographs was used in the subsequent court of inquiry so that witnesses could identify pieces of the wreckage, and the technique is now commonplace both at accident scenes and subsequent cases in courts of law. The set of over 50 Tay bridge photographs are of very high quality, being made on a large plate camera with a small aperture and using fine grain emulsion film on a glass plate. When the surviving positive prints are scanned at high resolution, they can be enlarged to show details of the failed components such as broken cast iron lugs and the tie bars which failed to hold the towers in place. The set of original photographs is held at Dundee City Library. The photographs show that, in the words of the Public Inquiry the bridge was "badly designed, badly built and badly maintained". The methods used in analysing old photographs are collectively known as forensic photography.
Between 1846 and 1852 Charles Brooke invented a technology for the automatic registration of instruments by photography. These instruments included barometers, thermometers, psychrometers, and magnetometers, which recorded their readings by means of an automated photographic process.

5×7 in. unretouched photograph of the Wright brothers' first flight, 1903.
Photography has become ubiquitous in recording events and data in science and engineering, and at crime scenes or accident scenes. The method has been much extended by using other wavelengths, such as infrared photography and ultraviolet photography, as well as spectroscopy. Those methods were first used in the Victorian era and developed much further since that time.









Full-spectrum, ultraviolet and infrared

Ultraviolet and infrared films have been available for many decades and employed in a variety of photographic avenues since the 1960s. New technological trends in digital photography have opened a new direction in full spectrum photography, where careful filtering choices across the ultraviolet, visible and infrared lead to new artistic visions.
Modified digital cameras can detect some ultraviolet, all of the visible and much of the near infrared spectrum, as most digital imaging sensors are sensitive from about 350 nm to 1000 nm. An off-the-shelf digital camera contains an infrared hot mirror filter that blocks most of the infrared and a bit of the ultraviolet that would otherwise be detected by the sensor, narrowing the accepted range from about 400 nm to 700 nm.[10] Replacing a hot mirror or infrared blocking filter with an infrared pass or a wide spectrally transmitting filter allows the camera to detect the wider spectrum light at greater sensitivity. Without the hot-mirror, the red, green and blue (or cyan, yellow and magenta) colored micro-filters placed over the sensor elements pass varying amounts of ultraviolet (blue window) and infrared (primarily red, and somewhat lesser the green and blue micro-filters).
Uses of full spectrum photography are for fine art photography, geology, forensics & law enforcement, and even some claimed use in ghost hunting

Digital photography

Traditional photography burdened photographers working at remote locations without easy access to processing facilities, and competition from television pressured photographers to deliver images to newspapers with greater speed. Photo journalists at remote locations often carried miniature photo labs and a means of transmitting images through telephone lines. In 1981, Sony unveiled the first consumer camera to use a charge-coupled device for imaging, eliminating the need for film: the Sony Mavica. While the Mavica saved images to disk, the images were displayed on television, and the camera was not fully digital. In 1990, Kodak unveiled the DCS 100, the first commercially available digital camera. Although its high cost precluded uses other than photojournalism and professional photography, commercial digital photography was born.
Digital imaging uses an electronic image sensor to record the image as a set of electronic data rather than as chemical changes on film. The primary difference between digital and chemical photography is that chemical photography resists manipulation because it involves film and photographic paper, while digital imaging is a highly manipulative medium. This difference allows for a degree of image post-processing that is comparatively difficult in film-based photography and permits different communicative potentials and applications.

Digital point-and-shoot cameras have become widespread consumer products, outselling film cameras, and including new features such as video and audio recording. Kodak announced in January 2004 that it would no longer sell reloadable 35 mm cameras in western Europe, Canada and the 0United States after the end of that year. Kodak was at that time a minor player in the reloadable film cameras market. In January 2006, Nikon followed suit and announced that they will stop the production of all but two models of their film cameras: the low-end Nikon FM10, and the high-end Nikon F6. On May 25, 2006, Canon announced they will stop developing new film SLR cameras.[11] Though most new camera designs are now digital, a new 6x6cm/6x7cm medium format film camera was introduced in 2008 in a cooperation between Fuji and Voigtländer.[12][13]
According to a survey made by Kodak in 2007, 75 percent of professional photographers say they will continue to use film, even though some embrace digital.[14]
According to the U.S. survey results, more than two-thirds (68 percent) of professional photographers prefer the results of film to those of digital for certain applications including:
film’s superiority in capturing more information on medium and large format films (48 percent);
creating a traditional photographic look (48 percent);
capturing shadow and highlighting details (45 percent);
the wide exposure latitude of film (42 percent); and
archival storage (38 percent)
Digital imaging has raised many ethical concerns because of the ease of manipulating digital photographs in post processing. Many photojournalists have declared they will not crop their pictures, or are forbidden from combining elements of multiple photos to make "illustrations," passing them as real photographs. Today's technology has made picture editing relatively simple for even the novice photographer. However, recent changes of in-camera processing allows digital fingerprinting of RAW photos to verify against tampering of digital photos for forensics use.
Camera phones, combined with sites like Flickr, have led to a new kind of social photography
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Color

Color photography was explored beginning in the mid 1800s. Early experiments in color could not fix the photograph and prevent the color from fading. The first permanent color photo was taken in 1861 by the physicist James Clerk Maxwell.
Early color photograph taken by Prokudin-Gorskii (1915).
One of the early methods of taking color photos was to use three cameras. Each camera would have a color filter in front of the lens. This technique provides the photographer with the three basic channels required to recreate a color image in a darkroom or processing plant. Russian photographer Sergei Mikhailovich Prokudin-Gorskii developed another technique, with three color plates taken in quick succession.

Practical application of the technique was held back by the very limited color response of early film; however, in the early 1900s, following the work of photo-chemists such as H. W. Vogel, emulsions with adequate sensitivity to green and red light at last became available.
The first commercially successful color process, the Autochrome, invented by the French Lumière brothers, reached the market in 1907. It was based on a 'screen-plate' filter made of dyed grains of potato starch, and was one of many additive color screen products available between the 1890s and the 1950s. A later example of the additive screen process was the German Agfacolor introduced in 1932. In 1935, American Kodak introduced the first modern ('integrated tri-pack') color film which was developed by two musicians Leopold Mannes and Leopold Godowsky ("Man" and "God") working with the Kodak Research Labs. It was Kodachrome, based on multiple layered silver gelatin emulsions that were each sensitized to one of the three additive colors—red, green, and blue. The cyan, magenta, and yellow dyes were created in those layers by adding color couplers during processing. This was followed in 1936 by Agfa's Agfacolor Neu. Unlike the Kodachrome tri-pack process, the color couplers in Agfacolor Neu were incorporated into the emulsion layers during manufacture, which greatly simplified the film processing. Most modern color films, except Kodachrome, use such incorporated-coupler techniques, though since the 1970s nearly all have used a technique developed by Kodak to accomplish this, rather than the original Agfa method. Instant color film was introduced by Polaroid in 1963.
Color photography may form images as a positive transparency, intended for use in a slide projector, or as color negatives intended for use in creating positive color enlargements on specially coated paper. The latter is now the most common form of film (non-digital) color photography owing to the introduction of automated photoprinting equipment

Black and white


All photography was originally monochrome, or black-and-white. Even after color film was readily available, black-and-white photography continued to dominate for decades, due to its lower cost and its "classic" photographic look. It is important to note that some monochromatic pictures are not always pure blacks and whites, but also contain other hues depending on the process. The cyanotype process produces an image of blue and white for example. The albumen process, first used more than 150 years ago, produces brown tones.
Many photographers continue to produce some monochrome images. Some full color digital images are processed using a variety of techniques to create black and whites, and some manufacturers produce digital cameras that exclusively shoot monochrome.

history


Photography is the result of combining several technical discoveries. Long before the first photographs were made, Chinese philosopher Mo Di described a pinhole camera in the 5th century B.C.E.Byzantine mathematician Anthemius of Tralles used a type of camera obscura in his experiments[5]Ibn al-Haytham (Alhazen) (965–1040) studied the camera obscura and pinhole camera,[4][6] Albertus Magnus (1193–1280) discovered silver nitrate,[7] and Georges Fabricius (1516–1571) discovered silver chloride.[citation needed] Daniel Barbaro described a diaphragm in 1568.[citation needed] Wilhelm Homberg described how light darkened some chemicals (photochemical effect) in 1694.[citation needed] The fiction book Giphantie, published in 1760, by French author Tiphaigne de la Roche, described what can be interpreted as photography.
Invented in the first decades of the nineteenth century, photography (by way of the camera) seemed able to capture more detail and information than traditional mediums, such as painting and sculpting.[8] Photography as a usable process goes back to the 1820s with the development of chemical photography. The first permanent photoetching was an image produced in 1822[3] by the French inventor Nicéphore Niépce, but it was destroyed by a later attempt to duplicate it.[3] Niépce was successful again in 1825. He made the first permanent photograph from nature with a camera obscura in 1826.[9] However, because his photographs took so long to expose (8 hours), he sought to find a new process. Working in conjunction with Louis Daguerre, they experimented with silver compounds based on a Johann Heinrich Schultz discovery in 1724 that a silver and chalk mixture darkens when exposed to light. Niépce died in 1833, but Daguerre continued the work, eventually culminating with the development of the daguerreotype in 1837. Daguerre took the first ever photo of a person in 1839 when, while taking a daguerreotype of a Paris street, a pedestrian stopped for a shoe shine, long enough to be captured by the long exposure (several minutes). Eventually, France agreed to pay Daguerre a pension for his formula, in exchange for his promise to announce his discovery to the world as the gift of France, which he did in 1839.
Daguerre continued work on the Daguerreotype in hopes of reducing exposure and furthering the development of photography, eventually culminating in financial discrepancies between the two men concerning Niépce's original work not being accredited by Daguerre (consider the name "Daguerreotype"). Because of these discrepancies, the two men discontinued their partnership and retired from photographical research after selling the rights to the Daguerreotype to the French government.
Meanwhile, Hercules Florence had already created a very similar process in 1832, naming it Photographie, and William Fox Talbot had earlier discovered another means to fix a silver process image but had kept it secret. After reading about Daguerre's invention, Talbot refined his process so that portraits were made readily available to the masses. By 1840, Talbot had invented the calotype process, which creates negative images. John Herschel made many contributions to the new methods. He invented the cyanotype process, now familiar as the "blueprint". He was the first to use the terms "photography", "negative" and "positive". He discovered sodium thiosulphate solution to be a solvent of silver halides in 1819, and informed Talbot and Daguerre of his discovery in 1839 that it could be used to "fix" pictures and make them permanent. He made the first glass negative in late 1839.
In March 1851, Frederick Scott Archer published his findings in "The Chemist" on the wet plate collodion process. This became the most widely used process between 1852 and the late 1880s when the dry plate was introduced. There are three subsets to the Collodion process; the Ambrotype (positive image on glass), the Ferrotype or Tintype (positive image on metal) and the negative which was printed on Albumen or Salt paper.
Many advances in photographic glass plates and printing were made in through the nineteenth century. In 1884, George Eastman developed the technology of film to replace photographic plates, leading to the technology used by film cameras today.
In 1908 Gabriel Lippmann won the Nobel Laureate in Physics for his method of reproducing colors photographically based on the phenomenon of interference, also known as the Lippmann plate.

Uses

Photography gained the interest of many scientists and artists from its inception. Scientists have used photography to record and study movements, such as Eadweard Muybridge's study of human and animal locomotion in 1887. Artists are equally interested by these aspects but also try to explore avenues other than the photo-mechanical representation of reality, such as the pictorialist movement. Military, police, and security forces use photography for surveillance, recognition and data storage. Photography is used by amateurs to preserve memories of favorite times, to capture special moments, to tell stories, to send messages, and as a source of entertainment.

Function

The camera or camera obscura is the image-forming device, and photographic film or a silicon electrThe camera or camera obscura is the image-forming device, and photographic film or a silicon electronic image sensor is the sensing medium. The respective recording medium can be the film itself, or a digital electronic or magnetic memory.
Photographers control the camera and lens to "expose" the light recording material (such as film) to the required amount of light to form a "latent image" (on film) or "raw file" (in digital cameras) which, after appropriate processing, is converted to a usable image. Digital cameras use an electronic image sensor based on light-sensitive electronics such as charge-coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS) technology. The resulting digital image is stored electronically, but can be reproduced on paper or film.
The movie camera is a type of photographic camera which takes a rapid sequence of photographs on strips of film. In contrast to a still camera, which captures a single snapshot at a time, the movie camera takes a series of images, each called a "frame". This is accomplished through an intermittent mechanism. The frames are later played back in a movie projector at a specific speed, called the "frame rate" (number of frames per second). While viewing, a person's eyes and brain merge the separate pictures together to create the illusion of motiononic image sensor is the sensing medium. The respective recording medium can be the film itself, or a digital electronic or magnetic memory.
Photographers control the camera and lens to "expose" the light recording material (such as film) to the required amount of light to form a "latent image" (on film) or "raw file" (in digital cameras) which, after appropriate processing, is converted to a usable image. Digital cameras use an electronic image sensor based on light-sensitive electronics such as charge-coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS) technology. The resulting digital image is stored electronically, but can be reproduced on paper or film.
The movie camera is a type of photographic camera which takes a rapid sequence of photographs on strips of film. In contrast to a still camera, which captures a single snapshot at a time, the movie camera takes a series of images, each called a "frame". This is accomplished through an intermittent mechanism. The frames are later played back in a movie projector at a specific speed, called the "frame rate" (number of frames per second). While viewing, a person's eyes and brain merge the separate pictures together to create the illusion of motion

photography

Photography is the process, activity and art of creating still or moving pictures by recording radiation on a radiation-sensitive medium, such as a photographic film, or an electronic sensor. Light patterns reflected or emitted from objects activate a sensitive chemical or electronic sensor during a timed exposure, usually through a photographic lens in a device known as a camera that also stores the resulting information chemically or electronically. Photography has many uses for business, science, art, and pleasure.
The word "photograph" was coined in 1839 by Sir John Herschel and is based on the Greek φῶς (photos) "light" and γραφή (graphé) "representation by means of lines" or "drawing", together meaning "drawing with light".[1] Traditionally, the products of photography have been called negatives and photographs, commonly shortened to photos.