Adobe photoshop cs2 사용자 설명서
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ADOBE PHOTOSHOP CS2
User Guide
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Sharpen your image multiple times in small amounts. Sharpen the first time to correct blur caused by capturing
your image (scanning it or taking it with your digital camera). After you’ve color corrected and sized your image,
sharpen it again (or a copy of it) to add the appropriate amount of sharpening for your output medium.
your image (scanning it or taking it with your digital camera). After you’ve color corrected and sized your image,
sharpen it again (or a copy of it) to add the appropriate amount of sharpening for your output medium.
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If possible, judge your sharpening by outputting it to the final medium. The amount of sharpening needed varies
among output media.
among output media.
For greatest control use the Unsharp Mask (USM) filter or the Smart Sharpen filter to sharpen your images. Although
Photoshop also has the Sharpen, Sharpen Edges, and Sharpen More filter options, these filters are automatic and do
not provide controls and options.
Photoshop also has the Sharpen, Sharpen Edges, and Sharpen More filter options, these filters are automatic and do
not provide controls and options.
You can sharpen your entire image or just a portion defined by a selection or mask. Because the Unsharp Mask and
Smart Sharpen filters can be applied to only one layer at a time, you might need to merge layers or flatten your file
to sharpen all image layers in a multilayered file.
Smart Sharpen filters can be applied to only one layer at a time, you might need to merge layers or flatten your file
to sharpen all image layers in a multilayered file.
Note: Don’t be misled by the name Unsharp Mask, which comes from a darkroom technique used in traditional film
based photography. The filter sharpens images rather than the opposite.
based photography. The filter sharpens images rather than the opposite.
To use the Smart Sharpen filter
The Smart Sharpen filter has sharpening controls not available with the Unsharp Mask filter. You can set the sharp
ening algorithm or control the amount of sharpening that occurs in shadow and highlight areas.
ening algorithm or control the amount of sharpening that occurs in shadow and highlight areas.
1
Zoom the document window to 100% to get an accurate view of the sharpening.
2
Choose Filter > Sharpen > Smart Sharpen.
3
Set the controls in the Sharpen tabs:
Amount
Sets the amount of sharpening. A higher value increases the contrast between edge pixels, giving the
appearance of greater sharpness.
Radius
Determines the number of pixels surrounding the edge pixels affected by the sharpening. The greater the
radius value, the wider the edge effects and the more obvious the sharpening.
Remove
Sets the sharpening algorithm used to sharpen the image. Gaussian Blur is the method used by the Unsharp
Mask filter. Lens Blur detects the edges and detail in an image, and provides finer sharpening of detail and reduced
sharpening halos. Motion Blur attempts to reduce the effects of blur due to camera or subject movement. Set the
Angle control if you choose Motion Blur.
sharpening halos. Motion Blur attempts to reduce the effects of blur due to camera or subject movement. Set the
Angle control if you choose Motion Blur.
Angle
Sets the direction of motion for the Motion Blur option of the Remove control.
More Accurate
Processes the file longer for a more accurate removal of blurring.
4
Adjust sharpening of dark and light areas using in the Shadow and Highlight tabs. (Click the Advanced button to
display the tabs). If the dark or light sharpening halos appear too strong you can reduce them with these controls:
Fade Amount
Adjusts the amount of sharpening in the highlights or shadows.
Tonal Width
Controls the range of tones in the shadows or highlights that are modified. Move the slider to the left
or right to decrease or increase the Tonal Width value. Smaller values restrict the adjustments to only the darker
regions for shadow correction and only the lighter regions for highlight correction.
regions for shadow correction and only the lighter regions for highlight correction.
Radius
Controls the size of the area around each pixel that is used to determine whether a pixel is in the shadows or
highlights. Moving the slider to the left specifies a smaller area, and moving it to the right specifies a larger area.
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Click OK.