Adobe Photoshop Lightroom Classic For Dummies. Rob Sylvan

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       Offer Suggestions from Recently Entered Values: While you enter various metadata (such as keywords, titles, and captions), Lightroom Classic tries to help you by offering auto-complete suggestions after you type a few characters that resemble a previous entry. Uncheck the box to turn off this feature. Click the Clear All Suggestions Lists button if you want to keep the feature enabled but want to reset it.

       Include Develop Settings in Metadata inside JPEG, TIFF, PNG, and PSD Files: Okay, this setting and the next one are related. By default, Lightroom Classic stores only the work you do in the catalog. However, you might also want Lightroom Classic to write that information into each photo’s own metadata as a form of redundancy. Leave this box checked if you want to include the Develop settings with all other metadata when you tell Lightroom Classic to write to each of these non-raw file type’s metadata. If unchecked, the Develop settings reside only in the catalog file for non-raw photos even if you enable the automatic writing changes into XMP. One benefit of writing Develop settings to the file itself is that if that file is imported into another Lightroom Classic catalog, the settings carry over. The next setting in this list is for automating the process of writing from the catalog to each photo’s metadata, but you can also do it manually by selecting photos in Grid view of the Library and going to Metadata ⇒ Save Metadata to File.

       Automatically Write Changes into XMP: When this box is checked, Lightroom Classic writes to each photo’s XMP metadata space automatically and keeps it in sync with the catalog file. (XMP is short for Adobe’s Extensible Metadata Platform, which simply defines how the data is stored in the file.) However, certain things cannot be written to XMP, such as collection memberships, virtual copies, and stacking (all of these are covered in Chapter 5), and develop histories (see Chapter 9). The benefit of writing to XMP is that you not only keep key metadata and settings embedded in the original photo’s metadata space, but the information is accessible to programs outside of Lightroom Classic (Adobe Bridge and Camera Raw, for example). The downside is that the automatic process can include a performance hit (on slower systems) because Lightroom Classic works behind the scenes to write to each file.

       Write Date or Time Changes into Proprietary Raw Files: This setting comes into play only if you make a change to the capture date/time of a raw file (see Chapter 3 for more on file types). If the box is checked, Lightroom Classic will change the capture date/time inside the actual raw file. Some people prefer to keep their raw files completely unaltered, so if the box is unchecked (the default state), Lightroom Classic will write the change only to the associated XMP file, leaving the source raw file unchanged.