JD750 wrote:
That's not correct because a TIFF is lossless. Even given the same bit depth, when you are processing you are better off using a lossless format.
However the translation from 16 bit to 8 bit should occur at the end of the process rather than the beginning. So it's best to use 16 bit TIFF then compress and export, to 8-bit jpeg, or printer format, etc, at the end of the process.
We know that. But the camera can't produce a 16-bit TIFF, only 8-bit. A JPEG with minimum compression won't be much different.
But the problem starts with the 14-bit raw file. If you want 16-bit you need to get a better camera and live with the larger raw file.
The only alternative is to convert the 14-bit raw to 16-bit the way that DxO PureRaw 2 does it. That step alone eliminates a lot of noise as I already demonstrated.
Two more bits means 4x as many bytes for the data but the file is only about 3x as big because some of it is overhead that does not get bigger.
Once you have your 16-bit DNG (raw) you may already have all of the noise reduction you need. DxO PureRaw 2 also sharpens the data in the DNG file although you can't really control how much it does it.