Digital Stereo Photographs
R. B. Ulrich
By accessing the links below you will find samples of stereographic photographs taken by Roger Ulrich; these can be printed or viewed on your computer screen to create remarkable 3D effects.
The basic principle behind stereo photography is quite simple: two "normal" photographs are taken that correspond to the view seen by the left and right eyes. To replicate the binocular view of the human eye, the photographs are taken about 2.5 inches (ca. 6.5 cm) apart. The individual photographs may be taken closer together (for macrophotography) or farther apart (to enhance the binocular effect of more distant subjects). To maximize effect the cameras are spaced apart 1/30 of the distance between the lens and the subject (thus for a subject only 30 inches (ca. 76.5 cm) from the camera lens, the spacing need only be 1 inch/2.6cm).
The individual photos can be taken with a single digital camera mounted on a "slidebar," or by a pair of digital cameras that are set on a bracket and triggered simultaneously (I use a Lanc Shepherd Pro controller). One can still purchase used film stereo cameras, special "splitter" lenses, etc. All of the work presented here has been captured with digital cameras. For more on the process see John Hart's informative
Crystal Canyons website.
How to view the paired images
The images accessible through the links below are paired parallel images. They can be viewed either as physical prints or on your computer screen. You will need either prisms (good for traditional hard-copy prints) or a "pokescope" (good for viewing stereopairs in any format) to view the images. Other methods of viewing that require additional hardware and/or projection equipment include shutterglasses or a dual-projector system. I hope to add some anaglyphs soon; these can be viewed with red/blue (red/cyan) glasses.
New views are added on a regular basis!
Sample and Experimental Stereographs
Stereographs from Italy I Ara Pacis, Hadrian's Villa, Basilicas
Stereographs from Italy II Arch of Titus, Pietrabbondante, Saepinum
Stereographs of the Forum Iulium, Rome
Stereographs of Ostia Antica, Part I, Italy
Stereographs of Ostia Antica, Part II, Italy
See also my online list of still photographs of
Roman archaeological sites.