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In this movie I'll show you a couple of different ways to correct for distortions, whether they're caused by the lens element or the perspective of the scene here inside Camera Raw. So I'm starting off inside the San Simeon pool image, I've switched over to the Lens Correction panel and now I'll click in the Manual tab in order to bring up these options here. Now the number one problem with the scene is that it's coming at us over here on the left-hand side. So in other words the image is declining over to the right, and so what we need to do is angle it toward us.
And we can see these little icons that are showing us which direction we need to move. So in this case we need to move the right-hand side of the image toward us, so we need to apply a positive modification to this horizontal value. So I'll just go ahead and drag this triangle over to the right and obviously I've gone too far at this point but you can see that it allows us to angle the image in the opposite direction. I will go ahead and take this value down until it starts looking right, and my eye tells me that a value of about +8 is going to work out fine.
It also looks to me like the scene is sort of tilted toward us at the bottom here and so I'm going to go ahead and just tweak this vertical value slightly down to -2. And then finally it's hard to tell what kind of distortion we might have in this scene that is whether we have pin-cushioning that we need to address with some barrel distortion or whether we have barrel distortion inherent in the scene that we need to solve using some pin-cushioning. But to me it looks like we need to barrel things just slightly, so I'll go ahead and set that value to -2.
So altogether we've got -2, -2 and +8 for the Transform values, we don't need to modify the Rotate value. The image looks straight at this point. And Scale isn't going to do us any good either. All right, let's see another example that's sort of an opposite example. I'll switch over to Interior pool and this is the pool on the inside of the Hearst Estate, and of course the first thing that I would do is develop the image. So I'll go up here to the flyout menu icon, once again choose Apply Snapshot and then choose ACR7 conversion, and that gives us a world of better color inside the scene.
However, there's something up with it, something's off. So possibly your first temptation is to go for the Straighten tool and draw a line along the bottom edge of this wall here which is tipping slightly up and to the left. So I'll go ahead and release and we get this crop boundary, fine, and then I'll just go ahead and switch back to the Zoom tool and that actually looks worse than it did before. Now the ceiling is obviously off and so are the reflections in the water. So I'm going to go ahead and press Ctrl+Z or Cmd+Z on the Mac to undo that change, and I'm going to start things off once again by modifying the horizontal value, because the perspective is the most obvious problem with the scene.
Now in this case the right side of the scene is declining away from us, so I need to tip that left-half toward us by dragging the triangle to the left, and at about -8 we get a result that I think looks right. All right, now you can see that the image is bowing out toward us so we have a barrel distortion associated with the scene. And so that means I need to pincushion it and I'll do that by dragging this distortion triangle to the right, and I'm going to set this value actually to +8 like so, and that ends up flattening things quite nicely, and then I'm also going to just slightly tweak this vertical value.
I'll take it down to -1 and we end up with this much better effect here. Now you may recall where the San Simeon pool image was concerned. I'd cropped this image before I said about correcting the distortion of the scene. However, I did not crop the interior pool which is why we're seeing some gray edges around the side, so you probably want to crop those away. By switching to the Crop tool which you can get just as you can in Photoshop by pressing the C key and then I'm just going to drag pretty much around the entire scene like this and then Camera Raw will go ahead and snap that boundary inside the image.
Now if that's not what you want then you can right-click inside the image and turn off Constrain to Image. Now for whatever reason this command has no effect on an image that is not distorted, so you have to actually apply a Lens Correction before you can take advantage of it. In any case I'll go ahead and choose it just to show you how it works, and now notice that I can move the crop boundary outside to reveal empty portions of the image, those areas will appear as white if I open the image in Photoshop. However, I don't want that to happen, so I'll go ahead and right-click and choose Constrain to Image to move that crop boundary inside the image once again, and then I'll press the Z key in order to assign that crop.
All right, so just to give you a sense of how different these images look. I'll go ahead and click on the flyout menu icon and choose Camera Raw Defaults. This is the original version of the scene before I developed it or straightened it, and this is the after version. Meanwhile if I switch down to San Simeon pool and do the same thing, I'll go ahead and choose Camera Raw Defaults once again, this is the original version of this scene and then this is the developed and straighten version of the scene. Thanks to the power of the Manual Lens Correction controls here inside Camera Raw.
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