Catalina Photos: how to "Download Originals to this Mac" for a single album
In Mojave Photos, you used to be able to right-click on an album and select "Download Originals to this Mac" for that single album. This option does not exist in Catalina anymore.
This was absolutely essential, because I often need to "manually do something" to each photo in a large album (hundreds of photos). For example, I might want to select which photos I want to keep or delete. In order to do that, I need to see the full resolution photo, not some fuzzy lower-resolution version of it.
If the originals are not download on the Mac, this process takes ages: I have to go from photo to photo, and wait several seconds (sometimes 10 seconds or more, my Internet is often not fast) for each individual photo to be downloaded from iCloud before I can make a decision. With videos the process is unbearable.
With the per-album "download originals to this mac" I can do the downloading of the album overnight. By the morning, all photos will be downloaded and I can step through the photos quickly.
Note 1: I know there is a global "download originals to this mac" setting in the preferences. But that setting applies to the entire library. This does not work for me: I literally have more than 100,000 photos in my library and they do not fit on my disk.
Note 2: Before the per-album "Download Originals to this Mac" appeared in Mojave, there was a trick that worked. I would export all photos in an album. This would have the side-effect of also downloading all the originals for that album to the Mac. This trick does not appear to work anymore on Catalina.
Note 3: I am not the first to complain about this. See https://www.reddit.com/r/MacOS/comments/dkgzqe/photos_on_catalina_how_to_download_originals_to/
MacBook Air 13″, macOS 10.15