HOW to Quick photo fixes
Unsharp
Lack of sharpness, from poor focus or slight camera shake, can rob a pic of pop. Try an Unsharp Mask at 70–150 per cent with Threshold at 4, increasing the Radius from one pixel to about 4 depending on resolution and softness.
shadow
Increasing the Shadows slider pulls detail out of dark areas. You may need to add some saturation back (Photoshop does this automatically). If detail isn’t important, leave shadows dark (“crushed”) for a stronger look.
highlight
The Highlights slider can work wonders on washed–out, pale winter skies, as long as your camera captured some detail. This works best on Raw files. You may need to increase contrast and saturation a little, too.