How can I airdrop an album between Macs?
I have an album in Photos on my MacBook Pro, and I select it and try to share it via Airdrop. The target is my iMac, which can see the MacBook Pro via "searching for older Macs". The sharing seems to start, in that the photos in the album go through some sort of process called "preparing" or something like that, but nothing appears on the iMac. Can anyone say what's going on? All I want to do really is transfer an album from one Mac to another with minimum fuss. I realise I could try to share the album via the "Shared Albums" feature (at least I think I could) but why doesn't Airdrop do anything?
BTW, both my Macs are running MacOS High Sierra 10.13.4
iPhone 5, iOS 11.0.3, 16Gb