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Private TIFF Tag BaselineNoise

TIFF Tag BaselineNoise

IFDImage
Code50731 (hex 0xC62B)
NameBaselineNoise
LibTiff nameTIFFTAG_BASELINENOISE
TypeRATIONAL
Count1
Default1.0

Description

Used in IFD 0 of DNG files.

BaselineNoise specifies the relative noise level of the camera model at a baseline ISO value of 100, compared to a reference camera model.

Since noise levels tend to vary approximately with the square root of the ISO value, a raw converter can use this value, combined with the current ISO, to estimate the relative noise level of the current image.

See also

DNG Specification