Now that Dropbox Plus' price is down to $99/year for 1TB of space, I am tempted to use it as my backup folder for all of my Lightroom original photo files. I realize that the LR catalogs cannot reside in a network drive, although backups could. My question however deals with the underlying photo originals, the ones the Lightroom never touches. Can you back them up to a Dropbox folder? How do I ensure that the Photo Originals Folder in my iMac hard drive is always in complete sync with the Photo Originals Folder in Dropbox?