Change the look of photos with filters
Aperture allows you to change the look of photos in books by applying filters. For example, you might apply a filter that fades a photo so that you can position text over it to create an interesting cover. You can also apply filters that change a photo to black and white or sepia.
Apply a filter to a photo box
Select the photo box that contains the photo you want to change.
Choose the filter style you want from the Set Photo Filter pop-up menu.
Note: When you apply a filter to a photo in a book and then examine the photo with the Loupe, the photo appears without the filter effect. The filter is applied only to the photo in the book, not to the photo version. The Loupe displays the photo version.