How to Post a 3D photo on Facebook

Facebook has a new option to post a 3D photo.  I have seen a few of these photos.  It's fun to look at.  They aren't really 3D but they have depth that you can see from different angles. 

Here are a few examples

see how to do this effect. 

a little FYI :

"3D Photos use the depth maps that are stored with “Portrait” photos taken on iPhone 7+, 8+, X or XS. "

So you according to this it must only be available on iPhone's 7+ or older. 

I made this little gem below over a year ago.  It's a video but kind of has a parallax effect that is similar to a 3D pic.