Adobe Photoshop CS3 Manual de usuario descargar pdf (Pagina 213)

PHOTOSHOP CS3

User Guide

206

Chromatic Aberration Corrects color fringing. Zoom in on the image preview to get a closer view of the fringing as

you make the correction.

Fix Red/Cyan Fringe Compensates for red/cyan color fringing by adjusting the size of the red channel relative to the

green channel.

Fix Blue/Yellow Fringe Compensates for blue/yellow color fringing by adjusting the size of the blue channel relative

to the green channel.

Vignette Corrects images that have darkened edges caused by lens faults or improper lens shading.

Amount Sets the amount of lightening or darkening along the edges of an image.

Midpoint Specifies the width of area affected by the Amount slider. Specify a lower number to affect more of the

image. Specify a higher number to restrict the effect to the edges of the image.

Vertical Perspective Corrects image perspective caused by tilting the camera up or down. Makes vertical lines in an

image parallel.

Horizontal Perspective Corrects image perspective, making horizontal lines parallel.

Angle Rotates the image to correct for camera tilt or to make adjustments after correcting perspective. You can also

use the Rotate Straighten tool to make this correction. Drag along a line in the image that you want to make

vertical or horizontal.

Edge Specifies how to handle the blank areas that result from pincushion, rotation, or perspective corrections. You

can fill blank areas with transparency or a color (background color), or you can extend the edge pixels of the image.

Scale Adjusts the image scale up or down. The image pixel dimensions aren’t changed. The main use is to remove

blank areas of the image caused by pincushion, rotation, or perspective corrections. Scaling up effectively results in

cropping the image and interpolating up to the original pixel dimensions.

Adjust the Lens Correction preview and grid

• To change the image preview magnification, use the Zoom tool or the zoom controls in the lower left side of the

preview image.

• To move the image in the preview window, select the hand tool and drag in the image preview.

• To use the grid, select Show Grid at the bottom of the dialog box. Use the Size control to adjust the grid spacing

and the Color control to change the color of the grid. You can move the grid to line it up with your image using

the Move Grid tool .

Set camera and lens defaults

You can save the settings in the Lens Correction dialog box to reuse with other images made with the same camera,

lens, and focal length. Photoshop saves settings for distortion, vignetting, and chromatic aberration. Perspective

correction settings are not saved. You can save and reuse settings in two ways:

• Manually save and load settings. Set options in the dialog box, and then choose Save Settings from the Settings

menu . To use the saved settings, choose them from the Settings menu. You can also load saved settings that

don’t appear in the menu using the Load Settings command in the Settings menu.

• Set a lens default. If your image has EXIF metadata for the camera, lens, focal length, and f-stop, you can save the

currentsettingsasalensdefault.Tosavethesettings,clicktheSetLensDefaultbutton.Whenyoucorrectanimage

that matches the camera, lens, focal length, and f-stop, the Lens Default option becomes available in the Settings

menu. This option is not available if your image doesn’t have EXIF metadata.

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Adobe Photoshop CS3 Manual de usuario Pagina 213