PHOTOSHOP CS3
User Guide
552
Important:
By default, nonsquare pixel documents open with Pixel Aspect Ratio Correction enabled. This setting scales
the image so it appears as it would on the nonsquare-pixel output device (usually a video monitor).
5
To view the image as it would appear on a computer monitor (square pixel), choose View > Pixel Aspect Ratio
Correction.
Circle in NTSC DV (720 x 480 pixels) document viewed on computer (square pixel) monitor with Pixel Aspect Ratio Correction turned on
(top) and Pixel Aspect Ratio Correction turned off (bottom)
You can simultaneously view an image with the Pixel Aspect Ratio Correction turned on and off. With the nonsquare
pixel image open and Pixel Aspect Ratio Correction enabled, choose Window > Arrange > New Window For [name
of document]. With the new window active, choose View > Pixel Aspect Ratio Correction to turn off the correction.
6
If you have a display device, such as a video monitor, connected to your computer via FireWire, you can preview
the document on the device:
•
To set output options before previewing the image, choose File > Export > Video Preview.
•
To view the image without setting output options, choose File > Export > Send Video Preview To Device.
When creating images for video, you can load a set of video actions (included with Photoshop) that automate certain
tasks—such as scaling images to fit video pixel dimensions and setting the pixel aspect ratio.
See also
“Preview your document on a video monitor” on page 580
Load video actions
For video images, actions automate tasks such as constraining the luminance range and saturation levels to comply
with broadcast standards, resizing and converting to nonsquare pixels for use in DVD slide shows (NTSC and PAL,
standard and widescreen aspect ratios), creating an alpha channel from all currently visible layers, adjusting image
areas (especially thin lines) that are likely to cause interlace flicker, and generating a title-safe overlay.
1
Choose Window > Actions to display the Actions panel.
2
Click the triangle in the upper right corner to open the Actions palette menu, and choose Load Actions.
3
In the Load dialog box, navigate to the Photoshop Actions folder, and select the Video Actions.atn file.
