[gumby]

That’s dreadful! I had assumed that iCloud (rather than Dropbox) sharing would share the original as that is already in the cloud anyway. It would just be a pointer or DB entry

I was horrified when I learned that Google wasn’t going to save full resolution by default. Had no idea Apple would do something similar.

[snuxoll]

That's what I thought myself, but then I realized pictures put into shared albums are actually copied - you can delete the original and it's still available in the shared album, at 0 cost to your iCloud storage.

It's kind of a nice feature, but at the same time it makes doing things like collecting photos from my wife for a photo book annoying.

[hmage]

Don't confuse storage and sharing.

You still have full resolution originals without any recompression in iCloud Photo Library.

[AlphaSite]

It’s full res for your photos, but it won’t share that publicly.