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

Altering part of the curve

If you double click on a point on the curve you lock that point so if you select two points you can move the curve between those points to adjust the contrast of that part of the tone range. Do not worry if your curve is no longer the classic ‘S' curve so long as you get the result you want.

Example of an irregular curve to adjust different pats of the image

Note

You can use the eyedroppers to colour correct an image. The LH one will balance the image from a D-max point, the center one from a mid-grey and the RH one from a D-min point