Hi,
If you wanted to share the two files with me at nate@natephotographic.com, I could take a look.
Some possible culprits would be:
- If one was scanned as a 64bit (instead of 48bit), then the profiles would not work on the 64 bit DNG. This is because the profiles in Lightroom are meant to work on 3 channel DNGs (16 bits in Red, Green, and Blue channels for 48bit total). The profiles will not work on one channel (monochrome) DNGs or 4 channel DNGS (RGB + infrared).
- If they are from different scanners, then it is possible that you have the profile for one of the scanners and not the other.
- If one was processed through “File > Plugin Extras > Update Vuescan/Silverfast DNG” and the other wasn’t.
- If they were captured at different times with different versions of Vuescan, it’s possible that Vuescan changed the metadata they are using for the scanner.
-Nate