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Mammoth Plate
A mammoth plate is a photographic plate that is usually 18 x 21 inches, but may vary in size from 15 by 18 inches to 22 by 25 inches. There is no official sizing or naming production chart for these glass negatives, only historical record. Before photographic enlargers were developed, photographers used mammoth plates to make large prints that were precisely the same size as the negative from which they were made. Notably, American landscape photographer Carleton Watkins derived his detailed images of the American West, namely his views of Yosemite commissioned by the California State Geological Survey The California Geological Survey, previously known as the California Division of Mines and Geology, is the California state geologic agency. History Although it was not until 1880 that the California State Mining Bureau, predecessor to the Cal ..., from mammoth plates. There is a proposed naming for very large plates under the listing "Mega Mammoth". References External link ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carleton Watkins
Carleton E. Watkins (1829–1916) was an American photographer of the 19th century. Born in New York, he moved to California and quickly became interested in photography. He focused mainly on landscape photography, and Yosemite Valley was a favorite subject of his. His photographs of the valley significantly influenced the United States Congress' decision to preserve it as a Yosemite National Park, National Park. Early life Birth Carleton E. Watkins was born on November 11, 1829, the eldest of eight children. His parents were John and Julia Watkins, a carpenter and an innkeeper. Born in Oneonta, New York, he was a hunter and fisherman and was involved in the glee club and Presbyterian Church Choir. His true middle name is the subject of debate: some sources give it as Eugene while others give it as Emmons. San Francisco In 1851, Watkins and his Childhood friend Collis Huntington moved to San Francisco with hopes of finding gold. Although they did not succeed in this spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photographic Plate
Photographic plates preceded film as the primary medium for capturing images in photography. These plates, made of metal or glass and coated with a light-sensitive emulsion, were integral to early photographic processes such as heliography, daguerreotypes, and photogravure. Glass plates, thinner than standard window glass, became widely used in the late 19th century for their clarity and reliability. Although largely replaced by film during the 20th century, plates continued to be used for specialised scientific and medical purposes until the late 20th century. History Glass plates were far superior to film for research-quality imaging because they were stable and less likely to bend or distort, especially in large-format frames for wide-field imaging. Early plates used the wet collodion process. The wet plate process was replaced late in the 19th century by gelatin dry plates. A view camera nicknamed "The Mammoth" weighing was built by George R. Lawrence in 1899, sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enlarger
An enlarger is a specialized transparency Image projector, projector used to produce Photography, photographic prints from film or glass Negative (photography), negatives, or from reversal film, transparencies. Construction All enlargers consist of a light source, normally an incandescent light bulb shining though a condenser (optics), condenser or translucent screen to provide even illumination, a holder for the negative or transparency, and a specialized lens for projection, though some, such as the Rapid Rectilinear or Aplanat could be used in both camera and enlarger. Enlarger lenses, like the Dialyte lens, dialyte construction, are generally symmetrical in design or nearly so, optimised for sharp focus at 2x to 10x magnification. The light passes through a Photographic film, film holder, which holds the exposed and Film developing, developed photographic negative or transparency. Prints made with an enlarger are called ''enlargements''. Typically, enlargers are used in a dar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yosemite Valley
Yosemite Valley ( ; ''Yosemite'', Miwok for "killer") is a U-shaped valley, glacial valley in Yosemite National Park in the western Sierra Nevada (U.S.), Sierra Nevada mountains of Central California, United States. The valley is about long and deep, surrounded by high granite summits such as Half Dome and El Capitan, and densely forested with pines. The valley is drained by the Merced River, and a multitude of streams and waterfalls flow into it, including Tenaya Creek, Tenaya, Illilouette, Yosemite Creek, Yosemite and Bridalveil Creeks. Yosemite Falls is the highest waterfall in North America and is a big attraction, especially in the spring, when the water flow is at its peak. The valley is renowned for its natural environment and is regarded as the centerpiece of Yosemite National Park. The valley is the main attraction in the park for the majority of visitors and a bustling hub of activity during tourist season in the summer months. Most visitors enter the valley from ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California State Geological Survey
The California Geological Survey, previously known as the California Division of Mines and Geology, is the California state geologic agency. History Although it was not until 1880 that the California State Mining Bureau, predecessor to the California Geological Survey, was established, the "roots" of California's state geological survey date to an earlier time. As might be expected for a state that owed its existence to the gold rush of 1849, the California State Legislature recognized that geologists could provide valuable information. In 1851, one year after California was admitted to the United States, the Legislature named John B. Trask, a medical practitioner and active member of the California Academy of Sciences, as Honorary State Geologist. In 1853 the Legislature passed a joint resolution asking him for geological information about the state. He submitted a report ''On the Geology of the Sierra Nevada, or California Range''. About two months later, the Legislature crea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
