TIFF Tag NoiseReductionApplied
|50935 (hex 0xC6F7)
Used in Raw IFD or Enhanced IFD of DNG files.
This tag indicates how much noise reduction has been applied to the raw data on a scale of 0.0 to 1.0. A 0.0 value indicates that no noise reduction has been applied. A 1.0 value indicates that the "ideal" amount of noise reduction has been applied, i.e. that the DNG reader should not apply additional noise reduction by default. A value of 0/0 indicates that this parameter is unknown.