Early stereographic photos were created using angled mirrors to capture two photographs, moving a camera by a few inches between photographs, or by simultaneously using two cameras placed a few inches apart. Humans naturally perceive depth (the third dimension) by combining two slightly offset images of the world separated by a few inches.

Civil War have recently been made accessible online.A stereograph is a combination of two photographs, usually placed side by side on cardstock, which create a three dimensional image when viewed with a stereoscope device. As part of the New-York Historical SocietyвЂ™s ongoing effort to make the Civil War Treasures Collection available digitally, more than 700 stereographs of the U.S. Klingenstein Library.While 3D technology is now most associated with big-budget movies, 3D imagery is not a new concept. VisitExhibitionsProgramsLibraryEducationExploreShop Join & Give Host an Event Shop Dine Admission Tickets AugCivil War in 3D: Stereographs from the New-York Historical SocietyThis post is by Alex Japha, Digital PreservationВ Intern in the Patricia D.

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Online stereogram viewer