As you go through your photographs in Aperture, there might be instances when you want to quickly review information about the images that are on display. There are several ways to do it, but the easiest, and the fastest, is to press the letter T while the cursor is on a selected image. The Image Tooltip window displaying the metadata will instantly pop up. It will stay on for about 30 seconds or so, or, you can press T again to make it disappear. While the Image Tooltip window is showing, you can move the cursor to any other image, and the metadata will be updated based on the new image you selected. You can view the metadata of any image in the Main Viewer, and also the thumbnail images in the Browser. And anywhere you might be in Aperture, in the Web Page view as shown in the example above, you can conveniently bring up the Image Tooltip with this shortcut. To modify the Image Tooltip information window, much like the Browser and Viewer metadata, go to the Preferences. And, if T doesn't "fit you to a tee," you can just as easily modify it to your preferred keyboard shortcut as well.