Apple Aperture 2 - Manual (Page 421)

Chapter 15 Making Image Adjustments 421
III
Adjusting Vibrancy in the Image
You use the Vibrancy parameter controls when you want to add a bit of punch to the
image without saturating every color. The Vibrancy parameter applies saturation to the
image in a nonlinear manner. Colors that are already saturated are left alone, while
saturation is added to all other colors. In addition, the Vibrancy parameter takes skin
tones into account, leaving them untouched. This allows you to take a portrait and
desaturate the image except for the skin tones.
A Little Saturation Goes a Long Way
Increasing the saturation of an image can make the colors appear more pure, and many
people like the effect of an image whose colors are more saturated than they would
appear naturally. However, you can easily oversaturate an image. In the process of
making the colors more pure, subtleties in shades of colors disappear, often resulting in
reduced detail in the image. To ensure that visual elements aren’t unnecessarily lost, pay
attention to the details in your image as you increase saturation.
Before Vibrancy adjustment After Vibrancy adjustment
(reduced saturation except for
the skin tones)