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In the last lesson, I showed you how the blending modes can be used with data from different layers. Well, of course blending modes started out before Photoshop had layers. And you can of course use blending modes as I showed previously by selecting a tool such as the paint tool here, the brush tool, and choosing from a different blending mode. And if I just choose the normal blending mode with this color, it will lay down that color paint - just as you would expect. If I choose something like hue, it's going to use the hue component of this particular color only, and maintain the saturation and brightness values over any pixels that it is painted over. Well that makes perfect sense, because I'm adding different colored pixels on top of pixels that already exist. Well I don't actually have to only use brushes or tools that add pixels on top of other pixels. I could also use a blending mode with a type of brush such as the smudge tool that smudges pixels. So I'm going to select the smudge tool here, and go back to normal mode and show you how this works. The smudge tool of course smudge pixels around as the name suggests. I'm going to click and drag out, and you can see how it's working. It's just as if you had chalk, and you are just pushing the chalk around your thumbs or something. It's getting a smudging effect. One of my options is, I could choose a different blending mode such as darken. And now notice that I cannot blend my lighter colors into the darker green background but if I go the opposite direction. So I'm pressing and holding on the green background smudging into the lighter Dandelion petals. And in this direction, the smudging works coz I'm going from darker to lighter. And we could of course invert that effect by choosing lighten. And now my lighter dandelion petals will be able to be smudged into the darker background, but not the opposite way. The darker background cannot be smudged into the lighter. And another way you might see this effect is by choosing say luminosity. In this way I can smudge my brightness values, but not the hues and notice the yellow hue here for this petal of the dandelion flower is not being smudged - only the brightness value is. So in a nutshell, blending modes of course could work with tools that lay down colored pixels on top of other colored pixels. Or they could also work with tools that distort pixels, such as the smudge tool.
| Course: | Adobe Photoshop 7 |
| Author: | Andrew J. Hathaway |
| SKU: | 33329 |
| ISBN: | 1889347272 |
| Release Date: | 2002-09-05 |
| Duration: | 11 hrs / 152 lessons |
| Work Files: |
Yes |
| Captions: | No |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |