First, head into iPhoto and select an album or photo you want to view. In the bottom-right corner of the screen you will see a button marked Info.
If you have the panel open while you’re viewing your albums, you’ll be able to roll your mouse over the pic at the top and click to select a key photo for the album.
You can edit the name and description of a selected photo, or an entire album, by clicking the text box underneath the photo at the top of the Info tab.
Some photos may have location data automatically included, but if yours don’t, you can geo-tag your picture by typing inside the Assign a Place option.
As you type, suggestions will appear below. The Places system is currently powered by Google, so you’ll easily find the area you’re looking for.
You will also be able to see information about Faces in this sidebar – if you’ve tagged your friends, or there are some unknown faces, they will appear here.
If you share an image to a social network, you can see the information in the sidebar. Here, for example, we can see who has interacted with it on Facebook.
When you’re viewing a single photo, the top of the sidebar will show a vast range of the image’s metadata, such as the make of camera used and ISO levels.
If you don’t want to see a specific box, or if you just want to get rid of all the boxes and view key info, you can click the small arrows to minimise each box.
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