I wonder what type of camera he used. Was it a stereo camera, a Lytro Illim or some technique with a single camera and two photos to create a stereo picture?

Yes. There are two options. One uses the old style where you need to wear red and blue glasses. The other can be projected using a 3 d tv in which two images are created with slightly different perspective. I admit the camera is a novelty, but it takes very interesting pictures. It was originally 1400, but I saw it on sale at B and H. I had a bonus gift card and used that to purchase it. The full price was about 350.00 Camera has no f stops. Shoots at F2 and then the depth of field is adjusted in post processing. The software also has a feature where you can make a 2 or 3 second movie showing the picture moving through the depth of the photo at f 2 and the ending up with thieving in focus at f 15

I own a Lytro Illim light field camera that has a single lens yet the pictures can be converted to 3D with the Lytro software.

I have the Adobe CC for photographers. When I subscribed this was my reasoning: when I shot film, the cost was no less that $15 per roll, with the cost of the film and the developing and printing. And I had no real control for post processing. So, the 120 per year cost is equal to developing about 8 rolls of film, and I continue to have the latest software. For me the cost of the subscription it was a no brainer.

Foliage is tough in Wisconsin. Like Illinois, most of the leaves just turn yellow, unless the trees are not native. I have traveled from Chicago to the Mississippi near Galena and north, as well as to the Kettle Moraine Scenic Drive. I was disappointed. You might want to look for an Arboretum, Like Morton's Arboretum about 30 miles west of Chicago. The trees there are beautiful in the fall.