That's really surprising. Really, Really surprising. As in I'd be pretty sure something other than "DNG converter is inserting a random profile" is happening here.
a) Are you completely sure that you're using the stand-alone DNG converter, not ACR or lightroom?
b) Are you completely sure that you're converting from the original NEF, not from a DNG created by ACR or Lightroom?
If you are sure, then I'd suggest posting the DNG
The issue has been confirmed but is unresolved. I am posting here hoping that someone working on DNG Converter will be attracted to take a look. Please see the other thread, which has moved further along.
Like I said, post the DNG. Otherwise everyone's just blundering around in the dark, guessing.
I just found an old post that explains the behavior you are seeing: Re: DNG Converter 5.2 and Camera Profiles
"The DNG Converter DOES use the new camera profiles. That is why we install them along with the DNG Converter.
If an existing raw file already has settings set by Camera Raw or Lightroom, the DNG Converter will use those settings when building the JPEG previews and deciding which profile to embed as the primary camera profile in the DNG.
Otherwise, it will use whatever custom defaults you have set for you camera model (in Camera Raw or Lightroom).
Or if you have not set custom defaults, it will use the Adobe default settings, which starting with version 5.2, now uses the new "Adobe Standard" profiles for all models that have them.
In any case, it needs to have the camera profiles installed to work correctly."
Unfortunately it doesn't explain what I'm seeing! Adobe DNG Converter uses the topmost Alpha-Numeric sort camera profile name in the 'User' folder where my LR and ACR "default" profiles are located. This is NOT the LR or ACR default profile, but instead the topmost Alpha-Numeric sort camera profile in the 'User' folder.
Here's the above DNG file created by Adobe DNG Converter:
Exactly. Thanks for the quote.