Back then I was kind of into cameras and photography. This photo from Hangingpixels Photo Art looked sick. The author is Oat Vaiyaboon, an Australian photographer.
Facebook launched the 3D Photos feature in 2018, designed for portrait mode photos from dual-camera iPhones. The problem: it only worked with photos that already had a depth map generated by the phone's hardware.
Vaiyaboon hacked the system. He created his own depth map manually in Photoshop: each layer of the photo converted to grayscale with different opacities. Then he combined the original photo and the depth map with the iOS app DepthCam to generate a JPEG file with depth metadata that Facebook interprets as a portrait mode photo.
The depth map logic is simple: darker = closer to the camera, lighter = farther away.
Foreground → Background. Each layer of the photo becomes a different gray in the depth map.
The result: DSLR and drone photos working as 3D Photos on Facebook. It took him 12 attempts to get the depth map right.
Gear: Canon 5D III, Canon 16-35mm f/2.8, Kase filters GND 0.9, CPL, ND64
Resources:
I never tried this directly. I think I did try it later, but with After Effects stuff or something like that. I never got it to work publishing a photo on Facebook.