You can control the sensitivity by telling GroupPhoto the timespan and minimum group size.

Before I realised that ‘group size’ was required, I accidentally separated a folder of 900 images into about 120 subfolders. I then wrote an ‘undo’ feature which actually takes a folder and merges the contents of any folders within that folder. This doesn’t act recursively – it only affects the level directly under the folder you choose, and no subfolders of those folders. Could be useful in it’s own right.

http://roryok.com/apps/GroupPhoto/GroupPhoto.exe

Things You Need To Know:

• Based on WPF/XAML so it requires .NET 3.5 Framework or higher – you can get that here
• That’s it!

UPDATE:
Got some feedback, and it turns out GroupPhoto has one or two bugs – not least that it doesn’t run on 64-bit machines. I’ve decided to re-write the whole thing in an earlier version of .NET and skip the whole WPF thing entirely. I’m hoping to re-release it shortly but realistically I’m super duper busy right now

Fog by the river in doorly

So you have a pair of shoes in your basket, and then you think “No wait – BACON! that’s what I actually needed!”