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There are number of different Selection tools that you can use in the toolbar. Knowing what each selection tool does will help you choose the best one for a particular job. In this movie we'll take a look at the Rectangular and Elliptical Marquee tools in the toolbar, and we'll take a look at some of the options for those tools. In particular, those that allow you to add to and subtract from a selection. The Rectangular and Elliptical Marquee tools are used to manually draw geometric selections. So with the Rectangular Marquee Tool selected in the toolbar if I move into the image and drag, that gives me a rectangular selection.
I'll click outside that selection to delete it. Now if I hold down the Shift key and drag with the Rectangular Marquee, I get a perfectly square selection. Again I'll click outside that selection so that I can show you what the Elliptical Marquee tool does. In the Options bar for the Rectangular Marquee, there is the related Elliptical Marquee Tool, which I'll select here. When I click and drag with the Elliptical Marquee tool, I get an oval selection. I'll click outside of that selection and this time I'll hold the Shift key and click and drag and I get a perfect circular selection.
I'll click outside of that selection too and I'm going to go back to the Rectangular Marquee Tool for a moment, because I want to show you what this set of icons does down here in the Options bar for all of the selection tools. You can use these icons to add to, subtract from, or intersect a selection. By default the Marquee and Lasso tools are set to this first icon, which is make a new selection. That's why if I make one selection with this tool and then I click outside of it, the first election is gone.
If that happens to you, by the way, and you meant to keep your selection you can go up to the Select menu right away, without doing anything else, and choose Reselect. If you have done something else in between then Reselect won't help you, but in that case you can go to the Window menu and open the History panel and you could step back through your history states to bring back your selection. Now sometimes you don't want to start a new selection but you want to add to the initial selection. So to do that I'll come down to these options and I'll click on the Add to Selection option.
And then I'll move into the image and I'll click and drag over these other bricks as well. And I'm going to overlap my initial selection, so that adds to that initial selection. I could even come in and select an area that is not contiguous with the first, for example this brick down here. If you select something that you don't want, it often comes in handy to be able to subtract from your initial selection. For that, I'll click on the Subtract from selection icon and then I'll come up here and I'll click-and-drag over this brick to subtract it from the initial selection.
And I don't have to be exceedingly careful when I do that; as you can see I can go outside the boundary of the area that I want to subtract. And then there's the Intersect icon down here. If I get that icon and I come in and click and drag over this brick, then when I release my mouse, the intersecting area will be the only thing that's selected. Now that I have a selection, let's do something to it. I'm going to go down to the taskbar and click Effects and that fills the panel bin with various kinds of effects: Filters, Styles, and Photographic effects.
I'll leave this set to Filters and I'll choose a category of filter. I'm going to go with the Texture category, and then I'm going to double-click the first icon here in the Texture category and the only part of the image that's affected by that filter is the area of the active layer that's selected. Now to deselect, because I don't have the new icon highlighted here in the options, I need to use the Deselect command. To do that I'll go up to the Select menu and I'll choose Deselect, or I'll use the common keyboard shortcut for deselect: Ctrl+D on the PC or Command+D on the Mac.
So that's how to use the Geometric Selection tools. What if you don't have a geometric area to select? Stay tuned for the next movies where I will show you how you can use the Lasso tools and after that how you can select by tone and color.
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