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Retouching / Dust and Scratches




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Subtitles of the Movie (Adobe Photoshop CS3 / Retouching / Dust and Scratches)

The dust and scratches filter will help us to eliminate some of the dust and scratches in this old image which you can find in the Photoshop CS3 samples folder. There is a photo in there in your install of Photoshop where you can find this guy. So you go to file open and then let me show you the path here, you see samples, it's Adobe Photoshop CS3 samples and then I found this image called old image and I think this guy is kind of creepy. Anyway what we can do with the dust and scratches is to evaluate the image and find out how we can get rid of some of these scratches here. Of course the image is pretty destroyed so we would use some of the other tools such as the healing tools and the clone stamp tool to really take our time and give this image a nice work over. So I'll give you an example, I'll grab the patch tool and with the patch tool I'll just draw around this dot here and then move the patch tool up and let go of the mouse and slowly but surely start to get rid of some of these longer scratches and some of the other ones in the image by slowly but surely evaluating those with the patch tool. But like I said some of the little miniscule ones you can try to use the dust and scratches filter to help you out with that. So I'm gonna go to noise under the filter menu and I'm going to choose dust and scratches. We are presented with a preview of our image and let me move around in here a little bit to show you what the dust and scratches will do. The first thing we see here is a radius and then we see the threshold. Now the radius slider will allow us to determine the area that is going to be analyzed before the filter is applied. So if I increase the radius Photoshop is going to say I'm going to apply this and in an area of four pixels. So that's the region I'm gonna go in. If I go all the way out like this it's gonna analyze and blow out everything, it's gonna try to get rid of everything in image, you can get a nice ghosty feel by doing that. Let me go ahead and show you what that looks like. I'm gonna go back to the filter and let's go to noise, dust and scratches. What the threshold will do is it will determine how different from one another the pixels need to be before the dust and scratches filter takes place. So it's a fine line of juggling that you have to do to determine the radius as well as the threshold. If I increase the threshold, what happens is we almost sharpen the image. So it's not really doing anything because the pixels have to be this many levels different before the, the filter takes place. But I'm saying if I knock it down and I increase the radius then the filter has something to work with. So you have to really play around with these two sliders here. So I'm gonna go ahead and put this on two and I'm gonna drop this down to about three, actually I'll put this on three uh two are here and click OK. So as you see here we get a little bit of a blurry feeling but its better then it was. Let me undo that and you have to pretty much determine what you're going to do as far as getting rid of the damage in your images. I would use the dust and scratches filter pretty sparingly because it tends to blur things out a little bit too much for my liking. So instead I've used some of the healing tools and the clone stamp tool, take my time and reconstruct this image.

Tutorial Information

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

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