This is a relevant thread to join in with as I need a straight answer, which I didn't get when asking Apple support.
I need to enable more space on my MBP and noticed about 24GB being used in the Masters folder on Photos Library.
I do not store photos (except about 200MB) on this laptop so I was confused.
I used OmniDisk Sweeper as directed which showed the usage in the Masters Folder (accessed via Pictures/Photo Library/Package Contents.
Once accessing this folder the many many folders inside consisted of photos (at full res) which were stored on my IPad and other MBP so why are they on this laptop? My assumption is that because I enabled iCloud to backup photos and sync across all devices, somehow the masters have wound up on this limited storage MBP.
I did not check the box to download originals to this MBP (although initially the default was set that way) - so I don't understand why so much storage as been taken up by this images which originated on other devices.
I found this thread and indeed it seems that iCloud does take up hard drive space, which wasn't made clear at all, but is 24GB reasonable?
I will now have to disable iCloud off this laptop however having done that the 'Masters' file is still there in Photos folders. I would like to know if I can delete that also.
I Like the idea of being able to access across all devices but I think the term 'storage' is misleading to most of us assuming we can fee up space when in fact accessing photos and movies uploaded from multiple devices will take up space, the very reason I wanted to have this in the first place was to free up space.
IT is also hard to remember where the originals were uploaded from so essential to back up. It works as a synching tool and easy access but so frustrating the storage it takes up.