Orphoto wrote:
I was under the impression that the compression algorithms involved in jpg production were absolutely standardized.
That means that what we really are discussing is the camera's combination of settings chosen to apply. Nikon (the one brand im really familiar with) labels these as picture controls.
It's a tad more than that. The picture controls adjust the saturation, contrast, and sharpening. There's also the WB - white balance and Noise Processing that are baked-into the JPEG by the camera's processor chip. Then, there's the pixel resolution of the sensor. The pixel resolution comes over to the full-sized JPEGs, although the bit depth of the D850 (either 12- or 14-bit) is 'compressed' by the camera's unique processing into the 8-bit format of the JPEG.