These were shot using a Holga stereo pinhole camera. To view them in 3D, look at the center of the two images and cross your eyes, focusing on the most distant object in the picture. It takes some getting used to. Clicking on the image to make it full screen might make it easier as well. Ideally, I will have a stereo viewer for the physical print someday.
I recently purchased a Holga stereo pinhole 120 camera which I found on sale. Holgas, like Dianas, are “toy” cameras, basically reproductions of cheap plastic cameras made in Russia or China during the Cold War, and now marketed as niche items for “lomography“. This particular camera uses pinholes instead of lenses, so it requires a tripod to use properly.
Click on each photo to see a larger view. In order to see the 3D effect, you must cross your eyes as you look at these. You should see each photo move towards the middle until they overlap and there is only one image seen. It helps to focus on the most distant objects in the photo until your eyes sort of “lock on” to the photo. This method of printing them in cross-eye pairs was the simplest way for me to print them without the use of a 3D slide viewer or any other equipment of that sort.