Charles Street Mall, Boston Common, 1843

"The principal advantages of side-by-side viewers is that there is no diminution of brightness so images may be presented at very high resolution and in full spectrum color. The ghosting associated with polarized projection or when color filtering is used is totally eliminated. The images are discretely presented to the eyes and visual center of the brain, with no co-mingling of the views."

The images are significant because this was the first attempt at creating a 3D image by understanding the brain processes and how the images enter in the brain simutaneously. I guess this paralleled advances in understanding the eyes perception of something. This is interesting because this gives photographic freedom to manipulate an image with a knowledge of perception. Therefore instead of photos being true to reality they can be a manipulation of that reality through perception.