Jargon buster
‘Keywords’ is the name Photos uses for what some other apps called tags — individual words that describe what your images contain. Smart Albums let you filter by multiple keywords.
SMART NAME
Give your Smart Album a smart name. If you use this feature a lot, you’ll have loads of albums, so give them descriptive names you can tell apart.
SETTING RULES
This one’s important if you have a Smart Album with multiple rules. By default, Photos will find all photos that match any of your rules. If you only want the shots that match them all, say so here.
DEFAULT RULE
The default Smart Album screen allows you to set a single rule. If you want more, hit the ‘+’ sign to create another.
REFINING RULES
If it looks like your Smart Album is going to contain hundreds of shots, you could consider refining your rules a little more.