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In this movie, I'd like to show you how to use the SRD filter to remove dust and scratches from a reflective image. Earlier we accomplished a film scan using the iSRD tool which is the infrared dust and scratches filter. When we're doing reflective art, we use the standard SRD dust and scratches filter. So we activate that by clicking on the SRD icon and this dialog box comes up. And first thing we're going to want to do is turn that Preview on, just like any of these other filters like the Unsharp Mask or the GANE filter.
We want to actually see what it's going to be doing to our images and the only way to do that is to get that high-resolution scan. So the scanner, we'll go through a high-resolution scan. It takes just a minute or two and then it'll bring it up and look like this, and then you can use your navigator to move around just like we did when we applied the GANE filter. In this case, we're going to move into this area here where it's a little bit darker where we can see some of the nasty dust and scratches that we have in the original image, and there is plenty here for us to worry about. You know, when you apply sharpening to an image like this, boy, it just makes all those worse because they're high contrast edges, and the sharpening tool doesn't know a defect from a highlight shadow edge.
So you definitely want to apply this before you apply any sharpening to your image. We have several choices here and how we want to do this and how we want to want to view it, let's just take a look at some of these views here. First is the Original and then you can choose Mark and then you can see what it's going to actually be working on removing. Notice it marks most of them here; there's a few small ones like this that are very faint that it doesn't detect but we can get rid of those anyway, and then we can go Correct, so you can see what the corrected version is going to look like. Now the Defect type, typically you want to remove both black and white.
On a very light image that has dark defects then you could just go black. On a dark image that just has white defects, so that the dust and scratch doesn't hurt any of the detail in the shadow areas, you might just go with processing white defects. But on image like this, we'll just do both and that's typically the way I'll do it. Now there are three sliders here for adjusting the Dust and Scratch Removal. I typically leave this on 100% and then I'll adjust the Defect size and the Detection and I kind of work in reverse order most of the time.
For instance, let's move this back down to about 2 or 3 and you'll see some of the defects come back in. And then as we move this up to around 4, you'll see most of the defects are taken out. We can keep going up in size, although typically, when I get to 4 or 5 and I've got rid of the most of the large defects then I might push the Detection up to maybe about 80 or so, and boom, you'll see all the real fine ones are completely removed. So I typically leave my Intensity at 100 and then Defect size and I try to get it up around 4 or 5 and then go with Detection.
There is an Expert dialog box which, similar to the Selective Color Cast tool, provides a masking capability so that you can create masks in which you can apply different dust and scratch removal characteristics to various parts of your image. And you can create the mask and then edit the mask with these tools. Honestly, I've never had to use this tool in SilverFast, but I don't work with images have an enormous number of dust and scratches. So if you work in that kind of environment with those kind of images, you might find the masking tool interesting and useful.
So there is dust and scratch removal.
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