Noise reduction settings in the Detail Panel
Higher luminance detail values can help to preserve details, but may increase noise. Lower values will give cleaner results but decrease image detail and texture.
A higher setting will increase contrast but can give blotchy results. Lower values will smooth details.
Targets and removes specks of colour noise. You can be more aggressive with Color than Luminance, as it doesn’t affect details in the same way.
Higher values preserve colour in edge detail but can lead to unnatural colour spots. Lower settings help to remove spots but can result in bleeding colours.