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 a layer to burn and dodge
24. Curves
25. Altering contrast using curves
26. Altering part of the curve
27. Pysadelic curves
28. Curves and monochrome
29. IR conversions
30. HDR (High Dynamic Range) processing
31. Highlight & Shadow in Photomatix
32. Book list
33. Return to home page

REDUCING DIGITAL NOISE

The noise reduction tool in PS CS2 is highly controllable and is a very good reason to purchase this programme.

Third party programmes such as Noise Ninja can also produce good results.

Here is a good alternative method. w

Open the image >Image>mode>Lab colour

Open the channels palette. You have the following channels Lab, lightness, ‘a' and ‘b'

Highlight the ‘a' channel; this contains the colour data; and in the filter menu open Gaussian blur. In the dialog box increase the radius until you see the noise in the preview screen reduce to an acceptable level. Click OK

Now highlight the ‘b' channel and press Ctrl-F to apply the same amount of Gaussian blur as was applied to channel ‘a'

Return to Image>Mode>RGB