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A number of photographers, inventors and photographic businesses contributed to the design development of the solar camera. An antecedent was the solar microscope of c.1740, [5] employed in experiments with photosensitive silver nitrate by Thomas Wedgwood and Humphry Davy in making the first, but impermanent, photographic enlargements.
The conservation and restoration of photographs is the study of the physical care and treatment of photographic materials. It covers both efforts undertaken by photograph conservators, librarians, archivists, and museum curators who manage photograph collections at a variety of cultural heritage institutions, as well as steps taken to preserve collections of personal and family photographs.
For example, an enlargement from a certain negative as a 12 x 18 cm (approx. 5 by 7 inch) print may be sufficient for a scrapbook viewed at 50 cm (20 inches), but insufficiently detailed for an A4 print hung on a hallway wall to be viewed at the same distance, though usable at a larger 120 x 180 cm (ten times larger) on a billboard to be viewed ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 17 February 2025. Art and practice of creating images by recording light For other uses, see Photography (disambiguation). Photography of Sierra Nevada Photography is the art, application, and practice of creating images by recording light, either electronically by means of an image sensor, or chemically ...
In some old processes, the film emulsion was hardened during the process, typically before the bleach. Such a hardening bath often used aldehydes, such as formaldehyde and glutaraldehyde. In modern processing, these hardening steps are unnecessary because the film emulsion is sufficiently hardened to withstand the processing chemicals.
Digital photograph restoration is the practice of restoring the appearance of a digital copy of a physical photograph that has been damaged by natural, man-made, or environmental causes, or affected by age or neglect.