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AllDigikam/Noise Reduction
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Translation of the wiki page Digikam/Noise Reduction from English (en) to kaszëbsczi (csb)
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Digikam/Noise Reduction
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==Reducing Noise Using digiKam==
Transcribed from Mohamed Malik's blog, 12 February 2011
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All [http://en.wikipedia.org/wiki/Digital_single-lens_reflex_camera DSLR] cameras noise up to some extent. This is most true for entry level and consumer level DSLR cameras even when these cameras have very good ISO performance up to something like ISO 800.
I use a Nikon D3000 and its ISO performance is good up to ISO 800. ISO 1600 is good and it can be used in smaller sizes. However ISO 3200 images are very grainy and noise reduction has to be applied.
If you are using '''digiKam''' it has a great noise reduction tool. Double click the image where you want to reduce noise and give a right click -> <menuchoice>Edit</menuchoice>. You can even press <keycap>F4</keycap> on the keyboard and it will do the same thing.
From here go to <menuchoice>Enhance -> Noise Reduction</menuchoice> and you will be presented with this window.
Choose from the settings or you can choose your own settings. Here is a picture of before and after from my tests. They are much more usable and better looking after the noise reduction has been applied.
{{Tip|1=Matthias Welwarsky added "What I like most about the denoise tool is that I can apply separate amounts of reduction on luma and chroma. This helps a lot in preserving detail while giving a smooth color impression. Luminance noise becomes grain and color blotches are eliminated."}}
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