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level: easy
Curves. If the word catches you unprepared, you might well think of a line not too straight. However, in image editing, curves means something completely different. Err, something partly different. The Curves feature is a contrast and brightness adjustment tool in premium editing applications that is well-liked by advanced users. The new edition of Photoshop Elements finally includes the simplified version of such a tool.
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Photoshop Elements Tutorial - Curves | | | | 1.Load the photo
This is todays experimental subject, demonstrating the Curves feature in Photoshop Elements 5.0. |
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| 2. Curves
Click Enhance/Adjust Color/Adjust Color Curves. This is what the dialog looks like if you clicked Advanced Options at the bottom. But lets focus on the top first. You can see 6 previews that help you adjust the brightness and contrast of your photo with a click. You dont even need to have thorough knowledge of the curves. If you find this simpler interface satisfying, forget about what we were rambling on, and use the new feature happily (or grumpily, if you like). Clicking the six preview images leads to the following actions: Increase Midtones: Increases the brightness of the picture. Midtones get lighter in particular, dark areas and highlights only do so to a smaller extent.
Lighten Shadows: Only the dark areas are lightened.
Backlight: Increases contrast for back-lighted photos and tries to bring out details.
Increase Contrast: Increases contrast, obviously.
Darken Highlights: Darkens only light areas.
Solarize: Use it to ruin your photo. Generates unnatural colors.
This was the easier part of the job. Real possibilities are displayed only when you open the Advanced Options region. You get four sliders, plus a tone curve on the right that cannot be adjusted by dragging, it just serves feedback purposes. The sliders let you adjust brightness levels and contrast even more accurately. Their usage is demonstrated below with examples. |
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| 3. Highlights
The first slider, Adjust Highlights, lets you manipulate the highlights, i.e. the lightest areas of the picture. Drag it to the left to darken or to the right to lighten these areas. The left-side example image above shows the slider's effect when dragged all the way to the left. The lightest parts of the picture (mainly the building) got a bit darker, but the lighter parts of the sky became rather grey. Unfortunately, the areas bleached by a wrong exposition cannot really be mended with this tool. Instead of white, you get grey. The right-side example shows the slider all the way to the right, so everything that way light got lighter still. Most of the building is bleached. Darker areas remained unchanged, though. |
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  | 4. Midtones
Midtone Brightness increases or decreases the brightness level of midtones. Drag it to the left to darken themmake them greyas on the left-side picture, and to the right for an opposite effect. |
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| 5. Contrast
Midtone Contrast also effects the midtones, but adjusts their contrast.
The left image shows the slider dragged to the extreme left that produced a very rough contrast. Light areas got almost completely bleached while the darker ones dropped dead. The right-side image shows the slider dragged to the maximum. Apart from light and dark areas, the rest became an ugly grey. It looks like the two extremes produce rather radical results. Youre advised to treat this slider with caution. |
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  | 6. Shadows
Adjust Shadows lets you make the dark, shadowed areas of the photo lighter or even darker. Once again, on the left weve dragged the slider to the minimum, so dark areas got even blacker. On the right, however, the slider is on the maximum, and more details are visible in the shadows. Light areas remain unchanged. |
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 | 7. Some kind of result
Weve played with the sliders a bit, and this is what weve got. First we clicked Lighten Shadows. Then weve decreased the highlights and slightly the midtones as well. Midtone Contrast also got decreased a little, but on the other hand, weve increased the shadows brightness with the last slider. The tone curve on the right, as weve already mentioned, is just for visualization, but it also helps you to learn how to set up the curves in Photoshop. The lower left of the graph stands for the dark areas, the center for the midtones, and the top right represents the highlights. Drag the handles up or down to adjust the brightness of the respective areas. But this is another story. An easy example can be found in the Photoshop tip referenced below. |
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| Photoshop Elements Tutorial - Curves
Free PS Elements: Curves in Elements Version: Photoshop Elements 5.0 level: easy Curves. If the word catches you unprepared, you might well think of a line not
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