by Julieanne Kost
With all of the parameters available to determine the filters for Smart Collections, I often use them to check my work. For example, adding a Smart Collection with the rules set to Copyright / Is / Unknown, helps me to make sure that I have applied my copyright to all of my images. Likewise, setting the rule to Keywords / Are Empty, helps to show any missing keywords. And this is just the beginning, setting multiple rules will allow you to filter on a Date Range (Edit Date / In the Last / 60 Days) AND Rating / Is / 2 Star or Greater AND Folder / Contains /xx and so on!
To get even more sophisticated refining your Smart Collection filters, Option (Mac) / Alt (Win) + -click the plus icon within the New Smart Collection dialog ( the icon will change to a hash/pound sign) for additional rules (Any/All/None of the following are true).