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photograph viewing equipment
equipment, photograph viewing
General term for photographic equipment specifically used for viewing.
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alethoscopes
alethoscope
Optical devices invented by Carlo Ponti in 1860, and patented in 1861. These were used to view photographic transparencies or prints. It was claimed that stereoscopic relief was obtained from a single photograph, though the stereo effect was due to the nature of an illusion caused by the single viewing lens of the alethoscope.
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megalethoscopes
megalethoscope
Apparatuses invented by Carlo Ponti of Venice ca. 1870, for viewing large albumen photographs on thin paper, using a large lens to create the optical illusion of depth and perspective and having candles or kerosene lamps as a source of light. The photographs themselves were translucent, often colored and pierced with pinprick holes to create dramatic visual effects with backlighting, such as that of lights in a night scene.
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stereoscopes
stereoscope
stereo viewer (card type)
stereoviewer
stereocard viewer
Viewers in which pairs of stereoscopic images are mounted and appear as a single, three-dimensional image when viewed. Use for objects designed to view individual stereo cards, usually photographic prints. For the devices used to view wheels of mounted transparencies, marketed as a children's toy from the mid-20th century, use
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grand parlour stereoscopes
Stereoviewers (wheel type)
View-Master
View Master
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