Using Help
|
Contents
|
Index
Back
181
Adobe Photoshop Help
Transforming and Retouching
Using Help
|
Contents
|
Index
Back
181
5
Drag the side handles to extend the cropping bounds while preserving the perspective.
Important:
Do not move the center point of the cropping marquee. Photoshop needs to
know the original center point of the image in order to perform perspective correction.
6
Do one of the following:
•
Press Enter (Windows) or Return (Mac OS); click the Commit button
in the options
bar; or double-click inside the cropping marquee.
•
To cancel the cropping operation, press Esc or click the Cancel button
in the
options bar.
If Photoshop displays an error, it is probably due to improper placement of the corner
handles or center point. Click Cancel to go back and adjust the cropping marquee;
click Don’t Crop to cancel the cropping operation. An error may also occur if you’re
working with a previously cropped image.
Transforming objects in two dimensions
You can scale, rotate, skew, distort, and apply perspective to entire layers, selected parts of
layers, masks, paths, shapes, selection borders, and channels.
Note:
Pixels are added or deleted during transformations. To calculate the color values of
these pixels, Photoshop and ImageReady use the interpolation method selected in the
General section of the Preferences dialog box. This option directly affects the speed and
quality of the transformation. Bicubic interpolation, the default, is slowest but yields the
best results. (See
“Choosing an interpolation method” on page 66
.)
Specifying what to transform
You can apply transformations to a selection, an entire layer, multiple layers, or a layer
mask. In Photoshop, you can also apply transformations to a path, a vector shape, a vector
mask, a selection border, or an alpha channel.
Note:
You cannot apply transformations to16 bit-per-channel images. You can, however,
apply full canvas transformations to 16-bit images using the options in the Image menu.
(See
“Rotating and flipping entire images” on page 177
.)
To specify what to transform:
Do one of the following:
•
To transform an entire layer, make the layer active, and make sure nothing is selected.
Important:
You cannot transform the background layer. However, you can convert a
background layer to a regular layer. (See
“Adding layers and layer sets” on page 286
.)
•
To transform part of a layer, select the layer, and then select part of the image on that
layer.
•
To transform multiple layers, link the layers together in the Layers palette. (See
“Linking
layers” on page 289
.)
•
To transform a layer mask or a vector mask, unlink the mask, and select the mask
thumbnail in the Layers palette. (See
“Masking layers” on page 314
.)
•
(Photoshop) To transform a path or vector shape, use the path selection tool to select
the entire path or the direct selection tool to select part of the path. If you select one
