| TRADITIONAL PHOTOS | |
| Daguerreotype 1839 to 1865 Most popular from early 1840s to 1860. Image consists of silver amalgam (highlights) and pure silver (shadows) on a silver-coated copper plate; mirror-like surface; usually encased (in America), often hand-colored with pigments. |
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| Salted Paper Print 1840 to 1890s Most popular from 1840 to 1855. Silver image on uncoated paper support; matte surface; purplish-brown, red-brown, or yellow-brown hue. |
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| Albumen Print 1850 to 1920 Most popular from 1855 to 1895. Silver image in an albumen (egg white) binder on a thin paper support; uniform gloss; purplish-brown, red-brown or yellow-brown hue. |
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| Ambrotype 1855 to 1865 Most popular in late 1850s. Silver image in a collodion binder on an opaque glass support; usually encased. |
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| Tintype 1856 to 1920s Most popular in 1860s. Silver image in a collodion binder on a thin sheet of lacquered iron; some cased, usually in paper mats; dull gray with creamy white highlights. | ![]() |
| Cyanotype 1840s to 1920 Most popular from 1880 to 1920s. Iron salts on uncoated paper support; matte surface; blue image. |
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| Carbon Print 1860s to 1940s Most popular from 1870s to early 1900s. Image formed by pigmented gelatin layer on paper support; differential gloss between dark and white areas; a variety of image colors possible. |
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| Platinotype 1880 to 1930 Platinum image on uncoated paper support; matte surface; neutral image hue; characteristic image transfer. | ![]() |
| Gelatin Printing-Out Paper 1885 to 1920 Most popular from 1895 to 1905. Silver image in a gelatin binder on paper support; glossy surface; warm or purplish-brown hue. |
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| Glossy Collodion Printing-Out Paper 1885 to 1920 Most popular from 1895 to 1905. Silver image in a collodion binder on paper support; glossy surface; warm or purplish-brown hue; very sensitive to abrasion. |
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| Matte Collodion Printing-Out Paper 1894 to 1920s Most popular from 1895 to 1910. Silver image in a collodion binder on a paper support, toned with gold and platinum; semi-matte surface; near-neutral or greenish-black image hue; characteristic image transfer. | ![]() |
| Gelatin Developing-Out Paper, Fiber-base 1885 to present Most popular from late 1890s to 1960. Silver image in a gelatin binder on a fiber-base paper support; surface from glossy to matte; near-neutral image hue during 19th century, neutral to warm hues and great variety of textures during 20th century; probable silver mirroring. | ![]() |
| Silver Diffusion Print (Black-and-White Polaroid) 1948 to present Most popular from 1950s to 1960s. Silver image on a fiber base or RC paper with receiving layer; glossy surface. | ![]() |
| Chromogenic Color Print 1942 to present Most popular from 1960 to 1990s. Dye in gelatin binder on fiber base or RC paper support or acetate or polyester support; from matte to glossy surface. | ![]() |
| Dye Diffusion Print ("Instant Photos") 1963 to present Most popular from 1970s to 1980s. Dye image on RC paper coated with a receiving layer; glossy surface. | ![]() |
| Gelatin Developing-Out Paper, RC base Late 1960s to present Most popular from 1980s to 1990s. Silver image in a gelatin binder on RC paper support; from matte to glossy surface; variety of textures; neutral to warm hues; possible silver mirroring. | ![]() |
DIGITAL PHOTOS |
| Dye Diffusion Thermal Transfer Print Late 1980s to present Also called "dye sub." Instant kiosk prints, many 5 x 7 or smaller home printers; dye image on RC paper with receiving layer; glossy or luster. | ![]() |
| Electrophotographic Color Print Early 1990s to present Photocopiers and laser printers; image formed by pigment in resin on uncoated (matte) or cast coated (glossy) paper. |
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| Chromogenic Color Print from Digital Exposure 1990s to present Dye in gelatin binder on RC paper, polyester, or acetate film; from matte to glossy surface. |
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| Photo-Quality Inkjet Print 1990s to present Dye or pigment image on coated paper; from matte to glossy surface. |
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