Digital editig has a golden rule for me: Where there is no quality, you get no final quality.
You can change things, but if there is not a good starting point (shoot, light), you will get nothing but a vage idea of what was in front of the camera.
What you can see on films, is not true, from a dark blurred object you can't get a plate number or a perfect face.
As a suggestion, take light from deep shadows using only "Levels" (move sliders to the beginning of the curves in both ends), but not "Automatic leves", as "Automatic levels" will change all original colour as seen on your example. Then go to Ctrl+U "Tone/Saturation" and lower a little saturation, as the lighting process enforces the colours in the dark.
Not much more can be done, but a little more than in your example. Try it. |