Simple, small magnification device used to see small details more closely.- Loupe
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Convex lens that is used to produce a magnified image of an object.
High power magnifiers are sometimes mounted in a cylindrical or conical holder with no handle, often designed to be worn on the head; this is called a loupe.
Science dealing with natural and artificial gemstone materials.
Corrected 10× loupe
Strip or sheet of transparent film base coated on one side with a gelatin emulsion containing microscopically small light-sensitive silver halide crystals.
Color reversal film produces positive transparencies, also known as diapositives. Transparencies can be reviewed with the aid of a magnifying loupe and a lightbox. If mounted in small metal, plastic or cardboard frames for use in a slide projector or slide viewer they are commonly called slides. Reversal film is often marketed as "slide film". Large-format color reversal sheet film is used by some professional photographers, typically to originate very-high-resolution imagery for digital scanning into color separations for mass photomechanical reproduction. Photographic prints can be produced from reversal film transparencies, but positive-to-positive print materials for doing this directly (e.g. Ektachrome paper, Cibachrome/Ilfochrome) have all been discontinued, so it now requires the use of an internegative to convert the positive transparency image into a negative transparency, which is then printed as a positive print.
Type of photographic film that produces a positive image on a transparent base.
In traditional newsrooms and magazine offices slides were viewed using a lightbox and a loupe, which allowed rapid side by side comparison of similar images.
Quality of diamonds that relates to the existence and visual appearance of internal characteristics of a diamond called inclusions, and surface defects, called blemishes.
A clarity grade is assigned based on the overall appearance of the stone under ten times magnification, which is the standard magnification for loupes used in the gem world.
Glass whose surface has been ground to produce a flat but rough finish, in which the glass is in small sharp fragments.
The photographer focuses and composes using this projected image, sometimes with the aid of a magnifying glass (or loupe).
Computer input device that enables a user to hand-draw images, animations and graphics, with a special pen-like stylus, similar to the way a person draws images with a pencil and paper.
Professional pucks often have a reticle or loupe which allows the user to see the exact point on the tablet's surface targeted by the puck, for detailed tracing and computer aided design (CAD) work.
Large-format camera in which the lens forms an inverted image on a ground-glass screen directly at the film plane.
Often, a photographer uses a magnifying lens, usually a high quality loupe, to critically focus the image.
Binoculars or field glasses are two refracting telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects.
The Galilean design is also used in low magnification binocular surgical and jewelers' loupes because they can be very short and produce an upright image without extra or unusual erecting optics, reducing expense and overall weight.
Object or material with gemological characteristics similar to those of a diamond.
Diamond's hardness also is visually evident (under the microscope or loupe) by its highly lustrous facets (described as adamantine) which are perfectly flat, and by its crisp, sharp facet edges.