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Ambrotype
The ambrotype, also known as a collodion positive in the UK, is a positive photograph on glass made by a variant of the wet plate collodion process. As a cheaper alternative to the French daguerreotype, ambrotypes came to replace them. Like a print on paper, it is viewed by reflected light. Like the daguerreotype or the prints produced by a Polaroid camera, each is a unique original that could only be duplicated by using a camera to copy it. The ambrotype was introduced in the 1850s. During the 1860s it was superseded by the tintype, a similar photograph on thin black-lacquered iron, hard to distinguish from an ambrotype if under glass. The term ''ambrotype'' comes from ''ambrotos'', "immortal", and ''typos'', "impression". Process One side of a clean glass plate was coated with a thin layer of iodized collodion, then dipped in a silver nitrate solution. The plate was exposed in the camera while still wet. Exposure times varied from five to sixty seconds or more d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Ambrose Cutting
James Ambrose Cutting (1814–1867) was an American photographer and inventor, sometimes called the inventor of the Ambrotype photographic process. He grew up in poverty on a farm in Haverhill, New Hampshire. At age 28, he invented a new type of beehive in 1842, and on the money from selling his patents moved to Boston, Massachusetts. Ambrotypes To create an ambrotype, the photographer sensitized a polished plate of glass by the wet plate collodion process and exposed the plate in a camera to produce a negative image. The wet plate collodion process was invented just a few years before by Frederick Scott Archer and widely used for glass negatives, but in an ambrotype the collodion image is used as a positive, instead of a negative. When dry, the glass plate was then backed either with black paint, metal, cloth, or paper; this black backing made light areas of the negative appear darker, turning the negative image into a positive. Some ambrotypes were made with ruby or dark gree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tintype
A tintype, also known as a melanotype or ferrotype, is a photograph made by creating a direct positive on a thin sheet of metal, colloquially called 'tin' (though not actually tinplate, tin-coated), coated with a dark lacquer or Enamel paint, enamel and used as the support for the photographic emulsion. It was introduced in 1853 by Adolphe Alexandre Martin in Paris. It competed with both the ambrotype process and the older and established daguerreotype, finding particular adoption in North America. Tintypes enjoyed their widest use during the 1860s and 1870s, but lesser use of the medium persisted into 1930s and it has been revived as a novelty and fine art form in the 21st century. It has been described as the first "truly democratic" medium for mass portraiture. Tintypes were particularly used for portraits. They were at first usually made in a formal photographic studio, like daguerreotypes and other early types of photographs. At the time though the process like the profe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collodion Process
The collodion process is an early photography, photographic process for the production of grayscale images. The collodion process – mostly synonymized with the term "''wet-plate process''", requires the photographic material to be coated, sensitized, exposed, and developed within the span of about fifteen minutes, necessitating a portable darkroom for use in the field. Collodion is normally used in its wet form, but it can also be used in its dry form, at the cost of greatly increased exposure time. The increased exposure time made the dry form unsuitable for the usual portraiture work of most professional photographers of the 19th century. The use of the dry form was mostly confined to landscape photography and other special applications where exposure times sometimes longer than a half hour were tolerable. History Gustave Le Gray first theorized about the collodion process, publishing a method in 1850 that was "theoretical at best", but Frederick Scott Archer was credited wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daguerreotype
Daguerreotype was the first publicly available photography, photographic process, widely used during the 1840s and 1850s. "Daguerreotype" also refers to an image created through this process. Invented by Louis Daguerre and introduced worldwide in 1839, the daguerreotype was almost completely superseded by 1856 with new, less expensive processes, such as ambrotype (collodion process), that yield more readily viewable images. There has been a revival of the daguerreotype since the late 20th century by a small number of photographers interested in making artistic use of early photographic processes. To make the image, a daguerreotypist polished a sheet of Plating#Silver plating, silver-plated copper to a mirror finish; treated it with fumes that made its surface light-sensitive; exposure (photography), exposed it in a camera obscura, camera for as long as was judged to be necessary, which could be as little as a few seconds for brightly sunlit subjects or much longer with less ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calotype
Calotype or talbotype is an early photographic process introduced in 1841 by William Henry Fox Talbot, using paper coated with silver iodide. Paper texture effects in calotype photography limit the ability of this early process to record low contrast details and textures. The term ''calotype'' comes from the Ancient Greek (), "beautiful", and (), "impression". The process Talbot made his first successful camera photographs in 1835 using paper sensitised with silver chloride, which darkened in proportion to its exposure to light. This early "photogenic drawing" process was a ''printing-out'' process, i.e., the paper had to be exposed in the camera until the image was fully visible. A very long exposure—typically an hour or more—was required to produce an acceptable negative. In late 1840, Talbot worked out a very different ''developing-out'' process (a concept pioneered by the daguerreotype process introduced in 1839), in which only an extremely faint or completely i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collodion
Collodion is a flammable, syrupy solution of nitrocellulose in Diethyl ether, ether and Alcohol (chemistry), alcohol. There are two basic types: flexible and non-flexible. The flexible type is often used as a surgical dressing or to hold dressings in place. When painted on the skin, collodion dries to form a flexible nitrocellulose film. While it is initially colorless, it discolors over time. Non-flexible collodion is often used in theatrical make-up. Collodion was also the basis of most Collodion process, wet-plate photography until it was superseded by modern gelatin emulsions. History In 1846, Louis-Nicolas Ménard and Florès Domonte discovered that cellulose nitrate could be dissolved in diethyl ether, ether. They devised a mixture of ether as the solvent and ethanol as a diluent that rendered cellulose nitrate into a clear gelatinous liquid. Collodion was first used medically as a dressing in 1847 by the Boston physician John Parker Maynard. The solution was dubbed "collodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charlotte Cushman
Charlotte Saunders Cushman (July 23, 1816 – February 18, 1876) was an American stage actress. Her voice was noted for its full contralto register, and she was able to play both male and female parts. She lived intermittently in Rome, in an expatriate colony of prominent artists and sculptors, some of whom became part of her tempestuous private life. Early life She was a descendant in the eighth generation from Pilgrim Robert Cushman, who helped organize the ''Mayflower'' voyage and brought the family name to the United States on the ''Fortune'' in 1621. Robert Cushman was a leader and a great advocate for emigration to America. He became a preacher in the colonies and was known for giving the first sermon in America. Charlotte's father, Elkanah, rose from poverty to be a successful West Indian merchant. Charlotte was a remarkably bright, sportive child, excelling over her schoolmates and developing a voice of remarkable compass and richness, with a full contralto register. Two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peninsular War
The Peninsular War (1808–1814) was fought in the Iberian Peninsula by Kingdom of Portugal, Portugal, Spain and the United Kingdom of Great Britain and Ireland, United Kingdom against the invading and occupying forces of the First French Empire during the Napoleonic Wars. In Spain, it is considered to overlap with the Spanish War of Independence. The war can be said to have started when the First French Empire, French and History of Spain (1808–1874), Spanish armies Invasion of Portugal (1807), invaded and occupied Portugal in 1807 by transiting through Kingdom of Spain (1810-1873), Spain, but it escalated in 1808 after First French Empire, Napoleonic France occupied History of Spain (1808–1874), Spain, which had been its ally. Napoleon Bonaparte Abdications of Bayonne, forced the abdications of Ferdinand VII of Spain, Ferdinand VII and his father Charles IV of Spain, Charles IV and then installed his brother Joseph Bonaparte on the Spanish throne and promulgated the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isabel, Princess Imperial Of Brazil
'' Dona'' Isabel (29 July 1846 – 14 November 1921), called "the Redemptress", was the Princess Imperial ( heiress presumptive to the throne) of the Empire of Brazil and the Empire's regent on three occasions. Born in Rio de Janeiro as the eldest daughter of Emperor Pedro II of Brazil and Empress Teresa Cristina, she was a member of the Brazilian branch of the House of Braganza (Portuguese: ''Bragança''). After the deaths of her two brothers in infancy, she was recognized as her father's heiress presumptive. She married a French prince, Gaston, Count of Eu, in an arranged marriage and they had three sons. During her father's absences abroad, Isabel acted as regent. In her third and final regency, she actively promoted and ultimately signed a law, named ''Lei Áurea'' or the Golden Law, emancipating all slaves in Brazil. Even though the action was broadly popular, there was strong opposition to her succession to the throne. Her gender, strong Catholic faith, and marriage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
