“I’m getting a weird issues when I sync my Negative Lab Pro conversion over to Lightroom CC Mobile or try to share the raw library online. I either get an error message or the images displayed do not look correct (even though they look correct in Lightroom Classic CC), or they appear really dark with weird colors. They look fine when I see them where I originally converted them.”
Lightroom Mobile CC needs the underlying “Negative Lab Pro” camera profiles to correctly display converted files. Unfortunately, the profiles will not automatically sync from Lightroom Classic CC or Lightroom CC 2015 and earlier. They will only sync from Lightroom CC Desktop (thanks Adobe, haha!)
How to Fix
To fix this, you need to do the following:
Open up Lightroom CC Desktop (not Lightroom Classic - unfortunately you can’t do this in Lightroom Classic - if you don’t have Lightroom CC Desktop, it should be a part of your Creative Cloud subscription and you can download it)
Go to “File > Import Profiles and Presets”
Add the “Negative Lab Pro” camera / scanner profiles you use. You can find these in your original download. Be sure to add the models of cameras and/or scanners you are using.
Once the profiles have been imported and allowed to sync, any devices connected to the same account (including other desktops, iPhone, iPad, Android, and ChromeOS devices) will have those profiles available.
While you should only have to do the above steps once, it is a bit cumbersome.
Another option is to use Negative Lab Pro’s “make copy” feature, and make a tiff or jpeg copy of the images you want to sync. The positive copy will not rely on the Negative Lab Pro profiles, so there is no issue with display on other devices. It will also enable you to use the regular Lightroom controls in Lightroom CC Mobile.