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As Photoshop continues to grow and evolve the engineers come up with more and more ways for you to create special effects without harming the pixels in your image. Now before, whenever you wanted to apply a special effect, what you would do is you would actually affect the layer itself and once you accepted your changes you were pretty much stuck unless you, you know you went to undo it or you went to the history panel to change your effects. But now with something called an adjustment layer you can play around and tweak you settings of your images without affecting the actual pixels and damaging them. So let's go ahead and do it the old fashioned way first of all, now I'd like you to pay attention to the panel here as you see we're in the layers panel and we're on layer one which shows this gentleman here. Now if I go to my image menu and I choose adjustments and let's say I choose let's go to curves and I go ahead and mess around with the curves. So I'll go ahead and just you know tweak the curve a little bit and I'll add some points I'll just really blow this image out and I'll really you know go crazy with it and I get this kind of neon effect here, this posterized effect and I'll click OK. Now, the effect has occurred but you'll notice that's it's really actually on the layer itself. The only way for me to adjust it any further is to have to go back and go back to the uh menu but the problem is it's gonna start from the very beginning. So the pixels are already you know changed so if I make any adjustments now all I'm really doing is working on the data that I already applied to the image and the only way to get rid of it is to go to edit and step backwards to get rid of that. Now, that's the beauty of adjustment layers. I can do the same tweaking without damaging the pixels and I can always turn the adjustment layer off. So let's go ahead and see where that is, it's right here this little symbol and if I click and you'll see that I have curves, I have levels, I have color balance, I can have black and white, I can change all my colors and I can also invert, posterized, and do all kinds of cool stuff without damaging the actual image itself. Let's go back to that curves real fast and check that out. So I'm gonna go to curves and once again I'm going to you know really just over blow this image and really saturate it OK so as you see here same exact effect, I'm gonna accept that, look at the difference in the panel. We have the image down here with the effect applied to it but we have another layer on top of it, this is the adjustment layer and it contains the data that is applied to this layer. Now check this out, let's say I don't want that, I don't have to go to edit undo, what I can do is turn the eyeball off, isn't that great. So now I have my effect and I can tweak it all day long and play with that and the cool thing is let's say I want to try something else, I don't like that. I I'll come back to it though I, I think I, I might want to present this to my client maybe I wont so I'll hide that. I'll go back and create another adjustment layer. So let's go to black and white and I'll go ahead and just play around with some of the uh settings in the black and white. Alright let's go ahead and play around with that and put some red filter and do all kinds of stuff to it and I'll click OK and let's say that I really like that but I want to also present the other one to my client. So I can say hey I have this black and white version, I'll turn the eyeball off, and I also have this one with the curves. So I can all of these different kinds of adjustment layers and as you see here I can put them both on and they overlap with one another. So I get this kinda really cool comic book uh neon thing going on here. So adjustment layers don't damage the actual pixels and I, I don't really need to get rid of them if I don't want to because I can simply turn them off. But if I want to get rid them all I've got to do is put them in the garbage can. So once again adjustment layers are a way for you to play around with the pixels of your image without actually damaging the original image itself. It's far, far better I think to use adjustment layers then to go ahead to the image menu and choose adjustments because you can turn them off and on at will.
| Course: | Adobe Photoshop CS3 |
| Author: | Dwayne Ferguson |
| SKU: | 33782 |
| ISBN: | 1-933736-98-4 |
| Release Date: | 2007-08-02 |
| Duration: | 9 hrs / 161 lessons |
| Work Files: |
Yes |
| Captions: | No |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |