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Photoshop has become an indispensible tool for photographers, designers, and all other creative professionals, as well as students. Photoshop CS4 Essential Training teaches a broad spectrum of core skills that are common to many creative fields: working with layers and selections; adjusting, manipulating, and retouching photos; painting; adding text; automating; preparing files for output; and more. Instructor Jan Kabili demonstrates established techniques as well as those made possible by some of the new features unique to Photoshop CS4. This course is indispensable to those who are new to the application, just learning this version, or expanding their skills. Example files accompany the course.
When you have any of the Selection tools highlighted here in the toolbox, you'll see these four icons in the Tool Options Bar. These are the icons that allow you to combine selections in different ways. I'd like to show you how to use these icons to add to a selection, to subtract from a selection, and to make an intersecting selection. But first I want to tell you this important point. By default the first two of these icons is the ones that's highlighted for a Selection tool. And what that means is that if you have a selection going, like this one for example, and you still have a Selection tool highlighted and you click somewhere in your image, you are going to lose your initial selection.
So I want to make sure that you know that so if it happens to you, you'll understand the reason. Now let's say I do have an initial selection and I want to add to it. Say I want to add this red block over here on the right. Then I am going to go up to the Options Bar, and I am going the second icon, Add To Selection, and I can come in and drag over the red block and that won't eliminate the first selection. It will add to it. Now let's say I want to add this green block, which is right next to the initial selection, and this is often what you are going to be doing when you are making a more complex selection in a photograph.
Then you can just come in and add to the initial one and the two selections will combine like this. You can even use more than one tool when you are adding to a selection. So for example, let's say I want to add this triangle to this selection over here. I am going to go to the toolbox and from behind the Lasso tool I am going to get the Polygonal Lasso. Then I'll go to the Options Bar for this tool and I'll click on the Add To Selection icon, and then I will come in and draw a selection around the triangle and all I am doing is clicking at each point. Because that's the way the Polygonal Lasso works as I discussed in another movie.
And so now I have added this triangle to the initial selection. To cover more things about adding to a selection. One is that you don't have to go up here and click on this icon. There is a keyboard shortcut and that is to just hold-down the Shift key as you create additional selections, and they will be added to the initial one. And I also want to make the point that you can use more than one Selection tool together and in fact, that's something you'll often do when you are actually working on your own images. Now let me show you how you can subtract from a selection. It's pretty much the same, except that you are going to use another icon, this one right here, the Subtract From Selection icon.
So I'll click on that one. I have the Polygonal Lasso tool selected. So I get rid of this triangle by clicking, my finger is off the mouse, I click down here, and then I'll click here and I'll click here, and I am just surrounding that part of the selection. I don't have to select it exactly, and when I close the selection, the triangular part of the selection is subtracted from or disappears from the rest of the selection. And finally let me show you how to make an intersecting selection. I am going to go back to the Rectangular Marquee for this one and I'll go up to the Options Bar for that tool and I'll click the fourth icon here.
I'll come down and I am just going to drag a wide stripe across the entire image, release my mouse and now the only pieces that are selected are those that that intersected all the existing selections. So those are ways that you can combine your selections adding to, subtracting from, and intersecting with selections. I have shown you this on a very basic image but these are techniques that you'll use in more complex situations as you are working on your own images in Photoshop.
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