Duplicate files - pictures.-

I have a directory tree which has around 15,000 photographs in it. They are inconsistently named, the directory structure makes no sense and there are a shitload of duplicates.

Using Easy Duplicate Finder, CCleaner Duplicates and Auslogics Duplicate Finder I have got through around 2,000 duplicates. But I reckon I still have 3,000 more, or at least of that magnitude, where the duplicate could be somewhere entirely different in the directory tree, and in fact there could be 3 or 4 duplicates of one picture.

Here is an example of a duplicate that I cannot get a program to find automatically. These *are* the same picture.





As you can see, they are virtually identical, but not quite. For some reason I have no clue about they are 40bytes different in size, though size on disk is the same. The dates are also slightly different with the exception of Created / taken dates which are identical.

Any idea of how I could automatically find these duplicates? Remember, they will be named differently and in different directories.

Because the thought of having to do it manually fills me with fear - if it is even possible.

If I have to do it manually, then I can only see searching the files within File Explorer, so seeing them without a directory structure, sorting them by creation date, and then manually scrolling through in "Extra Large Icon" view visually looking for duplicates and deleting them. It is so unlikely that two different files could have identical creation dates to the second that I am prepared to discount that possibility.