Corel Painter X3 Win/Mac, EDU, EN User's Guide download pdf (Page 82)

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Creating, navigating, and manipulating documents 59

If you set the dimensions in pixels and then change the number of pixels-per-inch

(resolution), this change will affect the size of the printed image. If you set your

document size in inches, centimeters, points, or picas and then change the resolution,

the dimensions of the printed image will not be affected.

Pixels-per-inch (ppi) is equivalent to dots per inch (dpi).

Resolution and print quality

The resolution of output devices (printers) is measured in dots per inch, and in the case

of halftones, lines per inch (lpi). Output device resolutions vary, depending on the type

of press and paper used. In general, a photograph is output at a crisp 150 lpi if printed

on glossy magazine stock, and at 85 lpi if printed on newspaper stock.

If you are using a personal laser or inkjet printer, set your document size in inches,

centimeters, points, or picas at the dots-per-inch setting specific to your printer. Most

printers produce excellent output from images set at 300 ppi. Increasing the file’s

pixels-per-inch setting does not necessarily improve the output and may create a large,

unwieldy file.

If you are using a commercial printer or a more sophisticated output device, the

dimensions of the image should always be set to the actual size that you want the image

to appear in the printed piece. A good rule of thumb is to set the number of pixels-per-

inch to twice the desired lines per inch. So, at 150 lpi, the setting should be twice that,

or 300 ppi; at 85 lpi, the setting should be 170 ppi. If you have questions about the

resolution of specific output devices, it’s a good idea to check with the print service

provider.

Opening and placing files

You can open files that were created in Corel Painter or in other applications. For

example, you can open a file from another graphics application and use Corel Painter to

add brushstrokes, tints, or paper textures.

You can also place a file in an existing Corel Painter document. The placed image

becomes a new reference layer in the document — you can transform (resize, rotate, or

slant) it on-screen by dragging its handles. A placed file maintains its link to the source

file until you commit it to the standard layer format.

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Corel Painter X3 Win/Mac, EDU, EN User's Guide Page 82

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