1. Camera settings
2. Exposure
3. Jpeg, tiff or RAW
4. Work flows
5. Jpeg work flow
6. RAW flow
7. File details
8. Storage
9. Computer set up and basic work flow
10. Image selection
11. Transferring images between folders
12. RAW processing
13. Sharpening
14. Shadow/highlight tool
15. Correcting under-exposed images
16. Overexposed images
17. Reducing digital noise
18. Correcting sloping horizons
19. Mono conversions
20. Layers
21. False snow
22. Producing a pencil sketch
23. Using layers to produce a painting effect
24. Using a layer to burn and dodge
25. Curves
26. Altering contrast using curves
27. Altering part of the curve
28. Pysadelic curves
29. Curves and monochrome
30. IR conversions
31. HDR (High Dynamic Range) processing
32. Highlight & Shadow in Photomatix
33. Book list
34. Return to home page

CORRECTING UNDEREXPOSED IMAGES

Open an underexposed image and make a duplicate layer. Open this layer and in the layer palette change the mode from normal to screen. This will lighten the whole image. To adjust part of the image select the area you want to lighten in a layer.

You can duplicate this process (Ctrl-J) as many time as is required to get the result you want.

I find this process is a bit more controllable if you reduce the opacity to 75 or even 50%.

Finally flatten the image.

One problem associated with underexposure is the dreaded digital noise. See page 16