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In this movie I'm going to introduce you to the Shadows/Highlights filter. We first saw it back in Chapter 7 of the fundamentals course, but in these next couple of movies I'm going to give you a much better sense of how the filter works. Now if you take a look at the final version of the image here, you'll see that there are only three filters assigned to the Smart Object, they're High Pass, Gaussian Blur, and Shadows/Highlights. Notice that Lens Correction is missing and that's because I needed to apply this Filter Mask, but the Filter Mask could not effect the Lens Correction filter, because if it did, we would burrow our way down to the distorted image, which wouldn't work at all. Which means what we need to do is put our current Smart Object inside of another Smart Object, so that it is not affected by this Filter Mask, and here's how that works.
I'll go ahead and switch back to my image in progress, and with the dude layer selected go up to the Layers panel flyout menu and choose Convert to Smart Object or press Ctrl+Comma(,), Cmd+Comma(,) on the Mac and you'll see that you've put the old Smart Object into a new Smart Object, because after all the filter list as well as the filter mask have disappeared. All right, now let's go up to the Image menu and choose Adjustments, and you'll see that Shadows/Highlights is available to you, because even though it's listed as a color adjustment, it actually functions as a filter, because it's looking for edges inside of an image much like the Sharpening filters and Gaussian blur and the other edge filters inside the software.
If you loaded dekeKeys, I've given you a keyboard shortcut of Ctrl+Alt+H or Cmd+Opt+H on the Mac and that goes ahead and brings up the Shadows/Highlights dialog box. Now the idea behind this filter is pretty darn simple, initially. The Shadows value allows you to brighten up the Shadows and the Highlights value allows you to darken the highlights. By default you get a ton of shadow brightening and no highlight darkening at all. That's exactly the opposite of what we want. Our shadows were bright enough in first place. So I'm going to take that Shadows value down to say about 10%, until we get this effect right here.
And if you want to get a sense for the effect of the filter, you can turn the Preview checkbox off in order to see the original shadows in the image, and then turn that checkbox back on, in order to see the brighter shadows. We really need this Highlights value. So I'm going to press Shift+Up Arrow in order to incrementally take those highlights down. And you can see by the time we get into the 80% range for example he looks like he's been either slapped around or of course he has horrible sunburn. Neither of which are the least bit indicative of that original photo.
So I'm going to take this value down, let's say to 45% where this image is concerned. Now you might say that looks pretty bad, after all if I turn the Preview checkbox off, you'll see that he looks brighter, more natural color is going on inside of his face as well. If I turn that Preview checkbox on, well, we have a lot more potentially volumetric detail going on inside the highlights. We also have this sunburn effect which is not something that we want at all. Also we've got a fair amount of haloing. I'm going to click inside that Amount value and then Ctrl+Spacebar+Click, Cmd+Spacebar+Click along the horizon right there and you can see this bounce of highlight above the horizon, a little bit of extra darkening being applied below the horizon as well, and that's because this is an Edge filter.
It is drawing halos around the image, and those halos can become awfully darn noticeable in certain areas, notice these halos that are appearing around his collar into the flesh of his neck as well. And we're enhancing some of the bad stuff inside the image, such as the posterization along the shadows inside of his neck. And that's all happening because of those halos. The problem is we have no control over those halos by default where Shadows/Highlights are concerned. We need control, which is why you have the Show More Options checkbox, and I'm going to show you what that control looks like inside the next movie.
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