Turning on "highlight hot and cold areas" can help you fine tune exposure adjustments when putting the finishing touches on your pictures. In this 2 minute video, I show you how to use this technique effectively.
More Aperture Tips and Techniques
To learn more about Aperture 3, check out my Aperture 3 Essential Training on Lynda.com. Also, take a look at our Aperture 3 Learning Center. Tons of free content about how to get the most out of Aperture.