Can I work on raw camera files on an iPad on a wireless external hard drive with Lightroom Mobile? That is, If I download SD cards to a My Passport Wireless Pro, can I use Lightroom Mobile on an iPad to review the raw images on the drive? I don't need to actually process the files, but when traveling I'd like to review the days take without carrying a laptop.
No, you can't do that. LR Mobile can work on photos imported from the iPad camera roll, or from photos synced over the cloud from LR desktop.