Stereoscopic Images

Humans see in three dimensions, in other words, we have depth perception, because our eyes provide overlapping fields of view from slightly different vantage points. The amount of depth perception in humans is limited to about 400 m distance, however, because of the relatively close spacing of our eyes, i.e., only 6-7 cm apart (Drury, 1987). Stereoscopic photography has been practiced since the middle 19th century to provide 3-D imagery (Osterman, 2007; Fig. 2-8). Aerial stereo photographs may be taken from widely separated positions (Fig. 2-9). Such overlapping pictures typically are viewed through a stereoscope in order to produce exaggerated depth perception (Fig. 2-10). Vertical stereophotos are important for visual photointerpretation and are the basis for many photogrammetric techniques (Ogleby, 2007).

Jan Ostermann Sfap
FIGURE 2-8 Antique stereoscopic viewer and stereophotos of Yosemite Valley, California, United States. These devices were popular in the late 19th and early 20th centuries.
100 Photography Tips

100 Photography Tips

To begin with your career in photography at the right path, you need to gather more information about it first. Gathering information would provide you guidance on the right steps that you need to take. Researching can be done through the internet, talking to professional photographers, as well as reading some books about the subject. Get all the tips from the pros within this photography ebook.

Get My Free Ebook

Post a comment