Corel PaintShop Pro X7, DE User's Guide Page 492

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488 Corel PaintShop Pro X7 User Guide
Daguerreotype — Widely used from 1839 to
1855, the daguerreotype was the first
popular form of photography. Images were
captured directly on a thin piece of silver-
plated copper. Because no negative was
produced, copies could not be made, so each
image was unique. Daguerreotypes are often
characterized by their reflective quality, a
darkening at the edges, and a dark blue-gray
or brown-black color.
Albumen — Widely used from 1855 to the
1890s, this inexpensive photographic method
produced paper-based photos. Negatives
were captured on glass, and the print was
then created on paper that used albumen
from egg whites to bind the light-sensitive
chemicals to the paper. Albumen photos are
often characterized by their glossy finish, and
soft, warm, brown tones.
Cyanotype Invented in 1841, this simple,
inexpensive photographic method became
popular from the late 19th century to the
early 20th century. The images are created
when ultraviolet light converts the light-
sensitive chemicals on the paper to Prussian
blue. Cyanotypes are characterized by their
brilliant blue color. Although this process did
not lend itself to portrait photography, the
permanence of the images made them
popular for scientific and engineering
purposes. For example, this method was used
for creating blueprints.
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