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Chapter 9. Pictures > Choosing the right resolution for a bitmap picture

Choosing the right resolution for a bitmap picture

For onscreen output, save the image in RGB color mode in its original application and at a resolution of 72 ppi.

For print output, choose one-and-a-half to two times the lpi (lines per inch) your commercial printer plans to use. For example, let's say your printer plans to use a 133 line screen. A color picture should be saved at twice the line screen. 133 times 2 equals 266, so you should save the picture in its original application at 266 ppi. For a grayscale picture, one-and-a-half times the line screen is sufficient (200 ppi, in our example).


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