First Look: Inside Photoshop CS3
Posted 03/25/2007 at 1:43pm
| by David Biedny
A Better Way to Be Selective
Isolating portions of an image is key to a multitude of different editing operations, especially for creative projects and detailed photo retouching and compositing. The art of making good selections is often honed over many years, and it can sometimes seem overwhelming. Luckily for Photoshop users of all experience levels, CS3 brings some new mojo to the task. The Quick Selection tool delivers an entirely new way to make selections, by simply painting over the general area you want to isolate.
As you paint over the desired area, the selection builds itself automatically, and of course, you can save the selection to its own alpha channel for further refinement. While some might find the Quick Selection tool useful, there’s no way to adjust the sensitivity, something we got into the habit
of doing with the Magic Wand.
The Refine Selections dialog is an extremely welcome addition that significantly streamlines the process of choking (contracting) and spreading (expanding) the outer edges of a selection, and controls the softness of the edges of a mask, all in an interactive fashion that matches manual techniques.
There’s a lot of control to be explored in the Refine Selections dialog. The best way to understand the dynamics of it is to experiment with making a selection around something and opening the Refine Edges dialog, which features a contextual preview à la Quick Mask mode, showing the selected area against white, black, the actual background, or the mask channel displayed by itself. Refine Edges is our pick for the most useful new tool for compositing professionals

Refine Selections delivers seriously fine control for making precision masks.
BONUS TIP: Intolerent Tolerance
Changing the Magic Wand’s Tolerance setting has no effect on the Quick Selection tool. While it seems odd that we would try this, we did discover that this Tolerance setting does indeed control the sensitivity of the otherwise-unrelated Grow command (found in the Select menu).
Next: Camera Raw Talent