Add new comment

This is Nikon's 'White

This is Nikon's 'White balance preconditioning' feature (no way to turn it off, AFAIK).
The data from Red and Green channels are multiplied by some small coefficient and rounded to integer after that.

I do not know WHY Nikon is doing this, but it happens on ALL recent Nikon cameras (have not tested very old ones like D2).

The nikon data is 'lossless JPEG' (huffman compression) compressed. Decompressor code is same for many camera types (Canon, Nikon, Lossless DNG, several others). The missing values occur only on Nikon files. So, this is definitely not decompression artifact, but source data artifact.

-- Alex Tutubalin