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All right Photoshoppers, it's time for some oldies but goodies, the selection tool modifiers. By the selection tools, I mean the Elliptical or Rectangular Marquee tool. Let's begin by pressing the letter M. That switches you to the given Marquee tool. Shift+M will toggle back and forth between the two, Rectangular or Elliptical. And some of these you are going to know. They are just basic ones, holding down Shift, holding down Option or Alt and so forth. But stick around. Later on in this video you might pick up a few things that you didn't know. Okay, let's begin by dragging with the Rectangular Marquee tool. Of course, I get just a free form rectangle. While I'm dragging I can hold down the Shift key to constrain that to a perfect square. Okay, to deselect, you just click anywhere outside the selection and it goes away.
If I drag again, holding down the Shift key and I put my cursor inside the selected area, this lets me move the selection. The pixels themselves are not moving. I'm just repositioning the actual selection. If you want to move the pixels, you have to use the Move tool for that. Okay, click-and-drag inside, moves the selection; click outside the selection, deselects it. All right, let's begin again by having a selection, I'll hold down the Shift key to get it perfectly constrained as a square. When I let go, I have got my selection here. If I add the Shift key down now, I'll be adding to my current selection, okay. If I hold down the Option key or the Alt key, I'll be subtracting from my current selection, let's begin with Shift.
To add, I want to draw another square with the selection. So if I Shift and start dragging, that new selection I'm adding to the current selection is not constraining as a square, it's still a rectangle. That's because the first time you hold down the Shift key, it means add to the current selection. How do we get the second selection to also constrained? let go of the Shift key, and press it down again. Now your new selection will also be constrained. This works if you switch the Elliptical tool as well. So I'll do Shift+M to switch to the Elliptical Marquee tool.
Again I want to hold down the Shift key to add to the current selection. See how it's not constrained to a perfect circle, so let go of the Shift key, hold it down and now it's constraining as a perfect circle again. Okay, so that works. Again to deselect just click anywhere outside a given selection. If I hold down the Option key or the Alt key, you'll be drawing your selection from the center of where you clicked and setup from corner to corner. So if I let go of the Option key or the Alt key before I let go of the mouse, you can see that the position of that selection changes, hold it down again Option or Alt and it's doing from the center where I clicked.
Now how do I get a perfect circle or a square from the center of where I clicked? Hold down Shift and Option together or Shift and Alt together. And you are drawing it from the center and constraining it at the same time. Okay. I'll add to another selection here by holding down Shift and again it's now constrained. I want to constrain it and draw this new selection from the center, just like before, let go of Shift key. Now hold Shift and Option down again or Shift and Alt again and this new selection that's been added to the existing selection will be constrained, and from the center where you clicked.
Now if you hold down Shift+Option or Shift+Alt, this time with an existing selection you will see that I don't have a plus or a Minus. I have this little cross, this little X on the cursor. That means I'm going to draw the intersection of where I overlap. So when I let go, I'm only going to get a selection of the intersection of these shapes. Okay, so that's how you get an intersection, kind of cool. As I'm making a selection here, sometimes you start a selection not in the right spot because you want to reposition this marquee as you are creating it.
Simply hold down the Spacebar, reposition it by dragging the mouse, let go of the Spacebar and keep dragging. So at anytime while you have the mouse down, you can reposition your marquee, your selection and keep dragging. Once you let go of the Spacebar, you're just continuing on with your drag. All right, so there is quite a few different modifiers there. Practice. It takes a little while to get the feel for it, but those are just your basic selection shortcuts.
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