3D movies, with polarized glasses handed out to the theater audience began in the 1950's. I saw a few as a kid. I believe that is what the Canon lens is for, 3D and virtual reality video, not for making lantern slides. You are skuzed.
User ID wrote:
Skuze me, Mr. Photo Historian ... but “since the 1950’s” ? Really !?!?!!?
A bit more UHH entertainment there.
3D predates film.
3D has been coming and going for waaaay over 100 years, and it’s back again today, and this time with a new name, or at least new initials: “VR”.