Agreed. I've been taking photos with iPhone for as long as I can remember, and now have a 7+, and consider myself 'reasonably good' at using it to take photos,

Agreed. I've been taking photos with iPhone for as long as I can remember, and now have a 7+, and consider myself 'reasonably good' at using it to take photos, but watching these little snippets, I actually learned a few new things that I didn't know. It's easy to become complacent about constant iOS upgrades. There are often lots of nifty little features that are probably too tedious to be explained in a lengthy update spec - But broken down into actual 'use cases' like this in incredibly useful and powerful.