Maybe this has already been posted and, if so, I apologize, but I found this to be a really "fast and dirty" method to correct a badly underexposed photo.
1. Create a new layer above the photo
2. Fill with 50% grey
3. Set blend mode to "color dodge"
Amazing results! [stuned]
1. Create a new layer above the photo
2. Fill with 50% grey
3. Set blend mode to "color dodge"
Amazing results! [stuned]