Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Photographic_film> ?p ?o }
- Photographic_film abstract "This article is mainly concerned with still photography film. For motion picture film, please see film stock.Photographic film is a strip or sheet of transparent plastic 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.The emulsion will gradually darken if left exposed to light, but the process is too slow and incomplete to be of any practical use. Instead, a very short exposure to the image formed by a camera lens is used to produce only a very slight chemical change, proportional to the amount of light absorbed by each crystal. This creates an invisible latent image in the emulsion, which can be chemically developed into a visible photograph. In addition to visible light, all films are sensitive to ultraviolet, X-rays and high-energy particles. Unmodified silver halide crystals are sensitive only to the blue part of the visible spectrum, producing unnatural-looking renditions of some colored subjects. This problem was overcome with the discovery that certain dyes, called sensitizing dyes, when adsorbed onto the silver halide crystals made them respond to other colors as well. First orthochromatic (sensitive to blue and green) and finally panchromatic (sensitive to all visible colors) films were developed. Panchromatic film renders all colors in shades of gray approximately matching their subjective brightness. By similar techniques special-purpose films can made sensitive into the infrared (IR) region of the spectrum.In black-and-white photographic film there is usually one layer of silver salts. When the exposed grains are developed, the silver salts are converted to metallic silver, which blocks light and appears as the black part of the film negative. Color film has at least three sensitive layers, incorporating different combinations of sensitizing dyes. Typically the blue-sensitive layer is on top, followed by a yellow filter layer to stop any remaining blue light from affecting the layers below. Next come a green-and-blue sensitive layer, and a red-and-blue sensitive layer, which record the green and red images respectively. During development, the exposed silver salts are converted to metallic silver, just as with black-and-white film. But in a color film, the by-products of the development reaction simultaneously combine with chemicals known as color couplers that are included either in the film itself or in the developer solution to form colored dyes. Because the by-products are created in direct proportion to the amount of exposure and development, the dye clouds formed are also in proportion to the exposure and development. Following development, the silver is converted back to silver salts in the bleach step. It is removed from the film during the process of fixing the image on the film with a solution of ammonium thiosulfate or sodium thiosulfate (hypo or fixer). Fixing leaves behind only the formed color dyes, which combine to make up the colored visible image. Later color films, like Kodacolor II, have as many as 12 emulsion layers, with upwards of 20 different chemicals in each layer.".
- Photographic_film thumbnail Undeveloped_film.png?width=300.
- Photographic_film wikiPageID "21556842".
- Photographic_film wikiPageLength "39053".
- Photographic_film wikiPageOutDegree "192".
- Photographic_film wikiPageRevisionID "706600658".
- Photographic_film wikiPageWikiLink 110_film.
- Photographic_film wikiPageWikiLink 120_film.
- Photographic_film wikiPageWikiLink 126_film.
- Photographic_film wikiPageWikiLink 135_film.
- Photographic_film wikiPageWikiLink 16_mm_film.
- Photographic_film wikiPageWikiLink 35_mm_film.
- Photographic_film wikiPageWikiLink 3M.
- Photographic_film wikiPageWikiLink 70_mm_film.
- Photographic_film wikiPageWikiLink 8_mm_film.
- Photographic_film wikiPageWikiLink ADOX.
- Photographic_film wikiPageWikiLink APUG.
- Photographic_film wikiPageWikiLink Absorbance.
- Photographic_film wikiPageWikiLink Achromatic_lens.
- Photographic_film wikiPageWikiLink Additive_color.
- Photographic_film wikiPageWikiLink Adobe_Photoshop.
- Photographic_film wikiPageWikiLink Adsorption.
- Photographic_film wikiPageWikiLink Advanced_Photo_System.
- Photographic_film wikiPageWikiLink Agfa-Gevaert.
- Photographic_film wikiPageWikiLink AgfaPhoto.
- Photographic_film wikiPageWikiLink American_National_Standards_Institute.
- Photographic_film wikiPageWikiLink Ansco.
- Photographic_film wikiPageWikiLink Apochromat.
- Photographic_film wikiPageWikiLink Astrophotography.
- Photographic_film wikiPageWikiLink Auguste_and_Louis_Lumière.
- Photographic_film wikiPageWikiLink Autochrome_Lumière.
- Photographic_film wikiPageWikiLink Barcode.
- Photographic_film wikiPageWikiLink Bergger.
- Photographic_film wikiPageWikiLink Bracketing.
- Photographic_film wikiPageWikiLink Calotype.
- Photographic_film wikiPageWikiLink Camera.
- Photographic_film wikiPageWikiLink Camera_lens.
- Photographic_film wikiPageWikiLink Category:Photographic_films.
- Photographic_film wikiPageWikiLink Category:Photography_equipment.
- Photographic_film wikiPageWikiLink Category:Storage_media.
- Photographic_film wikiPageWikiLink Celluloid.
- Photographic_film wikiPageWikiLink Cellulose_acetate.
- Photographic_film wikiPageWikiLink Cellulose_acetate_film.
- Photographic_film wikiPageWikiLink Chain_store.
- Photographic_film wikiPageWikiLink Charge-coupled_device.
- Photographic_film wikiPageWikiLink China_Lucky_Film.
- Photographic_film wikiPageWikiLink Color_photography.
- Photographic_film wikiPageWikiLink Color_printing.
- Photographic_film wikiPageWikiLink Complementary_colors.
- Photographic_film wikiPageWikiLink Contact_print.
- Photographic_film wikiPageWikiLink DX_encoding.
- Photographic_film wikiPageWikiLink Daguerreotype.
- Photographic_film wikiPageWikiLink Dai_Nippon_Printing.
- Photographic_film wikiPageWikiLink Darkroom.
- Photographic_film wikiPageWikiLink Deutsches_Institut_für_Normung.
- Photographic_film wikiPageWikiLink Disc_film.
- Photographic_film wikiPageWikiLink Dosimetry.
- Photographic_film wikiPageWikiLink Dr5_chrome.
- Photographic_film wikiPageWikiLink DuPont.
- Photographic_film wikiPageWikiLink Dynamic_range.
- Photographic_film wikiPageWikiLink Efke.
- Photographic_film wikiPageWikiLink Electromagnetic_spectrum.
- Photographic_film wikiPageWikiLink Enlarger.
- Photographic_film wikiPageWikiLink Exponentiation.
- Photographic_film wikiPageWikiLink Exposure_(photography).
- Photographic_film wikiPageWikiLink Ferrania.
- Photographic_film wikiPageWikiLink Film.
- Photographic_film wikiPageWikiLink Film_Washi.
- Photographic_film wikiPageWikiLink Film_base.
- Photographic_film wikiPageWikiLink Film_grain.
- Photographic_film wikiPageWikiLink Film_scanner.
- Photographic_film wikiPageWikiLink Film_speed.
- Photographic_film wikiPageWikiLink Film_stock.
- Photographic_film wikiPageWikiLink Fine_art.
- Photographic_film wikiPageWikiLink Fogging_(photography).
- Photographic_film wikiPageWikiLink Foma.
- Photographic_film wikiPageWikiLink Fujifilm.
- Photographic_film wikiPageWikiLink GAF_Materials_Corporation.
- Photographic_film wikiPageWikiLink GOST.
- Photographic_film wikiPageWikiLink Gamma_ray.
- Photographic_film wikiPageWikiLink Gelatin.
- Photographic_film wikiPageWikiLink Glass.
- Photographic_film wikiPageWikiLink Hermann_Wilhelm_Vogel.
- Photographic_film wikiPageWikiLink Hindustan_Photo_Films.
- Photographic_film wikiPageWikiLink History_of_the_camera.
- Photographic_film wikiPageWikiLink Hurter_and_Driffield.
- Photographic_film wikiPageWikiLink Ilford_Photo.
- Photographic_film wikiPageWikiLink Image_resolution.
- Photographic_film wikiPageWikiLink Imation.
- Photographic_film wikiPageWikiLink Impossible_Project.
- Photographic_film wikiPageWikiLink Infrared.
- Photographic_film wikiPageWikiLink Instamatic.
- Photographic_film wikiPageWikiLink Instant_film.
- Photographic_film wikiPageWikiLink International_Organization_for_Standardization.
- Photographic_film wikiPageWikiLink Kodachrome.
- Photographic_film wikiPageWikiLink Kodacolor_(still_photography).
- Photographic_film wikiPageWikiLink Kodak.
- Photographic_film wikiPageWikiLink Konica_Minolta.
- Photographic_film wikiPageWikiLink Large_format_(photography).
- Photographic_film wikiPageWikiLink Latent_image.