JARGON BUSTER
Key Capture NX-D terms
Lumin ance nois e
This is random variation in the brightness of adjacent pixels. Any software finds it difficult to separate this from actual image detail, and so reducing luminance noise usually means losing some subtle detail.
Colo ur nois e
This is a random variation in the colour of adjacent pixels. This is less likely to represent real detail, so it’s relatively straightforward to correct.