Lightroom manages photos based on a database. It can be understood that every photo is an object. Lightroom has established a database to store all your operations on this object (keywords, color matching, star setting, directory establishment, etc.). ). These operations will not cause any changes to the original photos, so when you move these original photos, you only need to reposition the file directory once, and you can easily retrieve the original photos.

Slimming disk C: Before slimming, there were more than 2,500 photos on disk C, all of which have been revised. First copy the photos directly to the mobile hard disk, delete the photos of the original C disk, open LR, right-click the folder to find the lost folder, and then assign a new directory to your mobile hard disk, and all the photos will come back in an instant. Please note that this is not to re-import the photos once, but to re-establish the lost mapping relationship through scanning. The whole process takes less than 10 second. Through simple operation, I successfully transferred the photos from the C drive to the mobile hard disk, cleaned up 20G disk space and changed the name of the folder. Through simple operation, I successfully transferred the photos from the C drive to the mobile hard disk, cleaned up 20G disk space and changed the name of the folder.

When you plug in the mobile hard disk, the process of modifying photos with LR is naturally the same as managing photos on the disk, so why don't I plug in the mobile hard disk? Magical things have come, once again reflecting the power of LR. There is a small question mark on the folder icon on the left side of the directory, and there is also a question mark on the corresponding photo on the left side. This actually means that LR has no photos. We opened a photo and indicated that the file was missing. But isn't this still visible? Why can I still see photos? It's not black technology, in fact, what you see is only thumbnails. Think about why it took so long to import photos for the first time. In fact, the most important job is to create several thumbnails of different sizes for photos. For example, if the original photo is 49 12*3264, which is larger than 20m, LR will create a thumbnail of 300K 640*480 and a thumbnail of 500K 1280*960 in its own directory.