Starting to Work / Lasso Tool and Anti-Aliased Selections
Subtitles of the Movie
Similar to the rectangular marquee tool, there is also a elliptical marquee tool. And you can click and drag out elliptical selection shapes. And of course (if) you hold down the Option key, you will drag from the center, and if you add the shift key it will constrain it to a perfect circle. There are a couple other marquee tools in this particular tool hidden down here - the single row and the single column. This will select a single pixel row of selection. So you can create a horizontal or a vertical selection of a single row of pixels. The lasso tool allows you to create a free hand selection, and notice that looks like a little lasso. So I can click and drag around an object and create a freehand selection. And sometimes doing this, you might have to go back using the add or subtract selection tools to edit your selections. And this would be quite difficult with the mouse, but I am using a pressure sensitive tablet and stylus combination. Makes it a little bit easier to create the selection. So again, I'm going to want to add to the selection by holding down the shift key, and notice now that my lasso tool has a small plus next to it. I can begin to perfect my selection this way. And I'll hold down the Option key or the Alt key on Windows to subtract. These different edit modes are available also by clicking these icons - add, subtract and intersect. The lasso tool does give me a different kind of option to chose anti-aliased or non anti-aliased. And I will show you the difference between the two. Choose Select menu>Deselect, and with my anti-alias currently enabled, what it does is it softens the edge of my selection a little bit. I will go ahead and fill that, and now I will disable anti-alias and create a new selection. I will move that next to this one, and I will fill this selection. And I will choose to deselect. I will zoom in around the edge of these two by drag zooming, so you can see. And notice how the anti-aliased selection has a bit of a dithered effect, softening the edge. Whereas the non anti-aliased is a very hard-edged stair-stepping effect, and it's attending to the edge of the pixels. So it's either yes or no, well an anti-aliased selection creates a, some intermediary colored pixels. Usually you want to leave anti-aliased enabled. All the selections allow you to edit some of the features using the Select menu, which you seen me come up and chose from time-to-time. I can choose to select everything by going to Select All. And you can see now my selection indicator, this marching ants or dancing ants or moving line, however you want to call it, is around my entire image. I can also turn off any selection that's activated by choosing Deselect, and that will deselect any currently active selection. Reselect will reselect the last active selection. And to demonstrate how Inverse works, I will first create a small selection. This is currently selected, but if I choose to inverse the selection, what it does is, it says select everything that was not selected and deselect that which was selected. So now this area is not selected, and everything outside of it is selected. So those are some other options that we have, and I will discuss more options of the Select menu later on.
Tutorial Information
| Course: | Adobe Photoshop 6 |
| Author: | Andrew J. Hathaway |
| SKU: | 33189 |
| ISBN: | 1930519206 |
| Release Date: | 2001-01-01 |
| Duration: | 13 hrs / 129 lessons |
| Captions: | For Online University members only |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |
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