Aperture features: 03 Enhancing
Aperture does not have the powerful image-manipulation tools of a program like Photoshop, but it can still do a good job of enhancing and perfecting your images from a photographic point of view. The Adjustments panel offers a collection of tools for straightening images, adjusting the curves, optimising the dynamic range of RAW files, adjusting the white balance and removing sensor spots and other blemishes. You can convert images into black and white, apply toning effects, carry out subtle colour modifications and produce vignette effects.
Aperture also has quite powerful localised adjustment tools for modifying specific areas of the image rather than the whole thing. These are non-destructive too, so you can change these later if you need to.
The ability to work with external editors means you can open an image with Photoshop or Elements from within Aperture, edit it and save the result, and the new picture will appear alongside the original in the Aperture library. You can also use plug-ins like those in the Google Nik Collection or OnOne Perfect Photo Suite 8.
Aperture uses ‘stacking’ to keep related photos together. When you use an external plug-in or editor, the edited image is stacked with the original. You can also stack related images manually, such as a series of shots in a continuous sequence, or variations on a portrait photograph. Stacks can be collapsed to show only the stack ‘pick’, or top image, or expanded to show all the photos in the stack.