An Achromatic lens is a system of lenses joined in order to minimize color and shape distortions (chromatic and spherical aberrations) that are inherent in a single lens system.

This is a stereo image where the left and right images are color converted so that only one of the image can be viewed through a corresponding color gel.  The two colors used are complementary to each [..]

A method of free-viewing stereo pairs where the left eye image is placed on the right side of a stereo pair and the right eye image is placed on the left side.  It is generally believed to be easier t [..]

The stereo base (distance between the two taking lenses) is greater than the average distance between a persons eyes (~63mm).

The stereo base (distance between the two taking lenses) is less than the average distance between a persons eyes (~63mm).  This is usually achieved with a specialized camera or by using a single came [..]

A provision in some stereo viewers which allows for adjustment of the distance between the lenses of the viewer to correspond with the image's infinity separation and in some cases the distance b [..]