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Condenser (optics)
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A condenser is an optical lens that renders a divergent light beam from a point light source into a parallel or converging beam to illuminate an object to be imaged.
A condenser (right) and its respective diaphragm (left)
A condenser (right) and its respective diaphragm (left)
A condenser between the stage and mirror of a vintage microscope
A condenser between the stage and mirror of a vintage microscope
Light microscopy with and without condenser. At low magnification, using a condenser may limit the field of view, and in such cases it is preferable t
Light microscopy with and without condenser. At low magnification, using a condenser may limit the field of view, and in such cases it is preferable to not use it. At high magnification, a condenser makes borders less marked, and is generally preferable in such cases.
An example of a situation where microscopy without condenser is preferable at high magnification is the evaluation of crystals (calcium pyrophosphate
An example of a situation where microscopy without condenser is preferable at high magnification is the evaluation of crystals (calcium pyrophosphate dihydrate crystal deposition disease pictured).
Enlarger
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An enlarger is a specialized transparency projector used to produce photographic prints from film or glass negatives, or from transparencies.
Condenser (optics)
…into a parallel or converging beam to illuminate an object to be imaged. Condensers are an essential part of any imaging device, such as microscopes, enlargers, slide projectors, and telescopes. The concept is applicable to all kinds of radiation undergoing optical transformation, such as electrons in electron…
Staff at William Henry Fox Talbot's commercial calotype establishment in Reading, Berkshire, England. Salted paper print from a calotype paper negativ
Staff at William Henry Fox Talbot's commercial calotype establishment in Reading, Berkshire, England. Salted paper print from a calotype paper negative, the left component of a panoramic pair of views, 1846.
Photographic enlarger.
Photographic enlarger.
Enlarger lens: using the aperture ring, the photographer adjusts the iris diaphragm.
Enlarger lens: using the aperture ring, the photographer adjusts the iris diaphragm.
Electric timer: photographers choose exposure time.
Electric timer: photographers choose exposure time.