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Typical magnifications for viewing slides full-frame depend on image format; 35 mm frames (24×36 mm slides to 38×38 mm superslides) are best viewed at ca. 5×, while ca. 3× is optimal for viewing medium format slides (6×4.5 cm / 6×6 cm / 6×7 cm). Often, a 10× loupe is used to examine critical sharpness.
A Coddington magnifier is a magnifying glass consisting of a single very thick lens with a central deep groove diaphragm at the equator, thus limiting the rays to those close to the axis, which minimizes spherical aberration. This allows for greater magnification than a conventional magnifying glass, typically 10× up to 20×. Most single lens ...
Miniature of Sinon and the Trojan Horse, from the Vergilius Romanus, a manuscript of Virgil's Aeneid, early 5th century. A miniature (from the Latin verb miniare 'to colour with minium', a red lead [1]) is a small illustration used to decorate an ancient or medieval illuminated manuscript; the simple illustrations of the early codices having been miniated or delineated with that pigment.
Conquer even the smallest type with this handy gadget — complete with a light that allows you to read in bed without irking your spouse.
Miniature painting may refer to: Miniature (illuminated manuscript), a small illustration used to decorate an illuminated manuscript; Persian miniature, a small painting on paper in the Persian tradition, for a book or album; Ottoman miniature, a small painting on paper in the tradition of the Ottoman Empire, for a book or album; Mughal painting
In a young child, it can be as close as 5 cm, while, in an elderly person it may be as far as one or two metres. Magnifiers are typically characterized using a "standard" value of 0.25 m. The highest magnifying power is obtained by putting the lens very close to one eye, and moving the eye and the lens together to obtain the best focus. The ...