Some of the Faire photos I’m seeing on the Sea Dog group have that dual-exposure problem when half the group is in sunlight and the other half is in shade. You either get overexposure of the people in sunlight or (more often) underexposure of the people in the shade. I did five minutes of clean-up on this one and was able to pull out a lot of details from the shadow. If I had the full-resolution version to work with, I would have done a lot better, but this was a test.
(OK, it looks like the handle on my slider has stopped working. Look for the green sliver in the middle – you can grab on that and slide it back and forth.)
