03 Four stacked images
You can keep doing this as many times as you like. Here, I’ve created two more versions of my original image so I now have a stack of four (including the original). Now you’ll notice the original image is the first one in the stack, and in the top left corner is the number ‘4’ – the number of images in the stack.
Now maybe you don’t want to see all the images all the time. Maybe you just want to see the top one to remind you what the others are…
04 Collapsing and expanding stacks
All you have to do is click on this number to ‘collapse’ the stack. The other images are still there, but they’re ‘under’ this top image.
To expand the stack again, click the number again. And if you want a different picture to be the key image at the top of the stack, drag it to the left so it’s at the front.
But it doesn’t stop there. What Aperture enables you to do that’s so clever is to have a different key picture for different albums. Let me show you how this works so that you can see its potential…
05 Select an image and create a new album
Let’s say I want to create an album showing all the black and white pictures from that project. I start by selecting all those images from within their stacks (I’m just showing one here), then use the command-L shortcut to create a new album from those images.