Analog photography

Analog photography

Analog photography is photography made by a progressively changing image medium; usually one based on chemical processes (photographic film) or on electronic tubes (TV). This was the dominant form of photography for much of its history, but is now being supplemented by digital photography.

Definition

As the term "" indicates, light is recorded as a linear chemical process or electric signal. This can be a reaction in a light-activated chemical compound, such as silver nitrate or silver iodide. In electronics this can also be a photoresistor based on cadmium sulfide, germanium or silicon. In this case the amount of electric current through the device is dependent on the amount of light that shines on it.

References

*Glenn D. Considine, "Van Nostrand's Scientific Encyclopedia", Two-Volume Set, 9th Edition (Hoboken, NJ: Wiley, 2002)
*Peter M.B. Walker, "Chambers Technical Dictionary" (Edinburgh: Chambers 1999)

External links

* [http://www.apug.org/forums/home.php Analog Photography Users Group] international community


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Analog — or analogueref|cwe may refer to: * (1): Analog signal, a variable signal continuous in both time and amplitude (as opposed to digital or discrete, e.g. analog wristwatch vs digital wristwatch) **Analog circuits, circuits which use analog signals… …   Wikipedia

  • Photography — is the art, science and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor or chemically by means of a light sensitive material such as photographic… …   Wikipedia

  • Photography and the law — A No Photography sign, commonly placed in properties where the owner objects to or it is illegal to take photographs (though in some jurisdictions, this is not a legal requirement). Photography tends to be protected by the law through copyright… …   Wikipedia

  • Analog Heart — Infobox Album Name = Analog Heart Type = Studio Album Artist = David Cook Released = May 6, 2006 Recorded = Genre = Alternative rock Post grunge Length = 41:00 Label = N/A Self Released Independently Producer = David Cook Reviews = Last album =… …   Wikipedia

  • Digital photography — Nikon D700 a 12.1 megapixel full frame DSLR …   Wikipedia

  • Clipping (photography) — Example image exhibiting blown out highlights. Top: original image, bottom: blown out areas marked red In digital photography and digital video, clipping is a result of capturing or processing an image where the intensity in a certain area falls… …   Wikipedia

  • Digital versus film photography — has been a topic of debate since the invention of digital cameras towards the end of the 20th Century. Both digital and film photography have advantages and drawbacks.[1][2] 21st century photography is dominated by digital operation, but the… …   Wikipedia

  • Infrared photography — Top: tree photographed in the near infrared range. Bottom: same tree in the visible part of the spectrum …   Wikipedia

  • Color photography — Color film redirects here. For the motion picture equivalent, see Color motion picture film. A circa 1850 Hillotype photograph of a colored engraving. Long believed to be a complete fraud, recent testing found that Levi Hill s process did… …   Wikipedia

  • History of photography — The first permanent photograph was an image produced in 1826[1] by the French inventor Joseph Nicéphore Niépce.[2] …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”