About the Noise Reduction filter
The Noise Reduction filter is a powerful form of noise reduction.
The following settings can be adjusted on the vertical sliders:
Colour/Luminance—specifies how much chrominance or luminance noise to reduce, respectively.
Colour Contribution/Luminance Detail—controls how much of the overall chrominance noise reduction is added to the image; controls the final quality of the luminance reduction. Higher Luminance Detail values will give a better quality finish but the application of the filter will take longer.
Contribution—controls how much of the overall luminance noise reduction is added to the image.The following settings can be adjusted on the context toolbar:
Split—enables the Before and After view. When toggled, it presents filter application side by side.
Apply—applies changes made.
Cancel—cancels changes made.