You will require
Anaglyphic Glasses to
properly view these 3D skating photos
Red/blue or red/green filters are used for viewing print, movies, games, and computer applications in 3-D.
Anaglyphic is defined as two views of the same subject (either moving or still) in contrasting colors and slightly offset for two different perspectives.
A three-dimensional effect is produced when these scenes are viewed with two correspondingly colored filters (usually red/blue and sometimes red/green lenses) matching the colors in the image.
The blue artwork is totally invisible to the right eye, and the red artwork is totally invisible to the left eye. Each eye gets only one view of the same picture. The brain then blends the two images into one 3-D image!
You can get a pair for free (for the cost of postage) at: Rainbow Symphony or 3D Glasses
3D Skating Photos.