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The way paper texture effects become relatively more pronounced as negative size decreases can be demonstrated with a digital camera by photographing a sheet of paper lit from behind, first at a distance where the sheet just overfills the field of view, and then at a closer distance where the field of view is perhaps one third as wide.
Onionskin or onion skin is a thin, lightweight, strong, often translucent paper, [1] named for its resemblance to the thin skins of onions. [2] It was usually used with carbon paper for typing duplicates in a typewriter, for permanent records where low bulk was important, or for airmail correspondence. [3]
Paper vellum has also become extremely important in hand or chemical reproduction technology for dissemination of plan copies. Like a high-quality traditional vellum, paper vellum could be produced thin enough to be virtually transparent to strong light, enabling a source drawing to be used directly in the reproduction of field-used drawings. [24]
The transparency of tracing paper is achieved by careful selection of the raw materials and the process used to create transparency. Cellulose fibre forms the basis of the paper, usually from wood species but also from cotton fibre. Often, paper contains other filler materials to enhance opacity and print quality.
Advertisement for Ansco Cyko photographic paper, 1922. Photographic paper is a paper coated with a light-sensitive chemical, used for making photographic prints.When photographic paper is exposed to light, it captures a latent image that is then developed to form a visible image; with most papers the image density from exposure can be sufficient to not require further development, aside from ...
Translucent paper may refer to: Tracing paper. Colour tracing paper; Onionskin; Vellum § Paper vellum This page was last edited on ...
The usual result is a negative shadow image that shows variations in tone that depends upon the transparency of the objects used. Areas of the paper that have received no light appear white; those exposed for a shorter time or through transparent or semi-transparent objects appear grey, [1] while fully-exposed areas are black in the final print.
Alpha mapping is used when the given object's transparency is not consistent: when the transparency amount is not the same for the entire object and/or when the object is not entirely transparent. If the object has the same level of transparency everywhere, one can either use a solid-color alpha texture or an integer value.