When making a backup of my iPhone through iTunes, how can I exclude the photos that are already stored in my iCloud Photo Library from the backup?
I have the impression that an iTunes backup includes all of the iPhone’s data related to iCloud Photo Library. I made a few backups of my iPhone while it is still downloading my iCloud Photo Library (my MacBook is still uploading to it), and the size of the backup keeps increasing. I had also cleared out Photos on my iPhone and made a backup before enabling iCloud Photo Library on it; the size difference of the backups before and after is the same as the amount of storage used by the Photos app on the iPhone (which is several gigabytes).
Photos on my MacBook is set to “Download Originals to this Mac”, while on my iPhone it is set to “Optimize iPhone Storage”.
I don’t really need the iTunes backups of my iPhone to include another copy of my photos (except perhaps for any photos taken on my iPhone which have not yet been uploaded to my iCloud Photo Library); is there any way to exclude them?
I realize this question is very similar to the question on “Omitting photos when backing up an iphone to a macbook with itunes”, but that question doesn’t seem to involve the use of iCloud Photo Library.