It is interesting to see how AI focus generation neural networks have evolved.

This is a scan and zoom of an old picture. In the zoom you can see the limited resolution of the original scan. (This was a picture my dad took of me, certainly on 35mm film, in the mid 70s).

The second is the AI generated focuses image. All of the ‘extra’ data is synthetic and didn’t really exist. It is surprisingly good. Perhaps we are entering the era of ‘Enhance!’