Cleaning grain from a Christmas Eve photo

A mother and her daughter in pajamas in front of a lit Christmas tree at night, with visible grain across the dark photo.

Close-up

Before, close-upBefore
After, close-upAfter
Wall and tree: the colored speckle is smoothed out.
Before, close-upBefore
After, close-upAfter
Faces: smoother, a little brighter and warmer.

Fictional demonstration. A mother and daughter in pajamas on Christmas Eve, lit only by the tree lights and one small lamp.

Keep in mind: Shapes in the dark areas come out cleaner, but that is smoothing and estimation, not recovered detail. Skin texture is slightly softer, so the faces are not pixel-identical. The tone is also graded warmer, with deeper blacks and a gentle vignette, so the picture is more than denoised.