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发信人: killest (victor), 信区: Graphics
标 题: PHOTOSHOP(25)-getting image into photoshop
发信站: 紫 丁 香 (Mon Mar 23 16:18:36 1998), 转信
4 To crop the image, press Return (Macintosh) or
Enter (Windows). To cancel the cropping opera-tion,
press Esc.
Note: You can抰 rotate the crop tool marquee for an
image in Bitmap mode.
To specify the size and resolution of the cropped area:
1 Double-click the crop tool (c)in the toolbox to
display its Options palette.
2 Select Fixed Target Size.
3 To begin with the size and resolution values of
the current image, click Front Image.
4 Choose the units of measurement you want
from the menus. Note that for Width, the
Columns option uses the width and gutter sizes
specified in the Rulers & Units preferences (see
page 175).
5 Enter values for the size and resolution you
want for the cropped area.
The Fixed Target Size option constrains the pixel
count of the image. As a result, if you specify a size
but not a resolution, Adobe Photoshop changes
the image resolution to compensate for the size
change. If you specify a resolution but not a size,
Photoshop changes the size to compensate for the
change in resolution.
6 Drag over the area you want to keep with the
crop tool and then press Return (Macintosh) or
Enter (Windows).
The final image has the specified size and
resolution.
61
Increasing the size of the work
canvas
The Canvas Size command lets you add or remove
work space, or extra canvas area, around an
existing image. You increase the canvas area by
specifying the height and width you want the
canvas to be.
You can also use the Canvas Size command to crop
an image by decreasing the canvas area; however, if
you want to adjust the size and resolution of an
image, you should use the Image Size command or
the crop tool. If you use the Canvas Size command
to crop an image, you might inadvertently lose
image information that you cannot recover.
To use the Canvas Size command:
1 Choose Image > Canvas Size.
2 Choose the units of measurement you want
from the menus. Note that for Width, the
Columns option uses the width and gutter sizes
specified in the Rulers & Units preferences (see
page 175).
3 Enter the dimensions in the Width and Height
boxes. The value above the text boxes reflects the
new file size.
4 For Anchor, click a square to indicate where you
want the existing image to be positioned on the
new canvas.
5 Click OK.
Before After
Added canvas appears in the background color. If
the background is transparent, the added canvas is
also transparent.
CHAPTER 3 62
Getting Images into Photoshop
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