Want to use iCloud Photos on Mac? In its simplest form iCloud Photos is a sync service that makes sure your iPhone, iPad, Apple Watch, Apple TV, and Mac all have every photo you’ve taken, all ready at a moment’s notice. That means you can access the photos from any other device with the feature turned on, so you’ll want to be sure you enable iCloud Photos on iPhone or iPad and you can even enable and use a Windows PC for accessing iCloud Photos, too. It’s incredibly convenient when it works as intended, but you’ll need to activate it before any of that…