Apple 1230, 627 user manual Scanning with custom settings, Setting the resolution

Scanning with custom settings

After you’ve scanned a number of images, you may want to customize the settings in the Apple Color OneScanner dialog box. This section provides detailed information about settings for resolution, tone, and threshold.

Setting the resolution

The level of detail in a scanned image is determined by the number of dots per inch (dpi) the scanner uses to reproduce an image. The number of dots per inch defines the resolution.

Higher resolutions provide more detail. Accordingly, the quality of a scanned image increases with higher resolution—but not always.

Things to think about when you set the resolution

Consider these factors when you choose a resolution:

mEach dot on the scanned image corresponds to a pixel on the computer screen. The higher the resolution (the greater the number of dots per inch), the larger the image appears on the screen.

mAs resolution increases, you need more memory and disk space to scan and store the image on your hard disk drive. Sometimes the extra resolution may not be worth the extra memory or disk space.

mWhen you choose a resolution, check the Image Info area for image size before you scan.

mScanning at a higher resolution may not necessarily produce better results because the printer or other output device (such as a monitor) may not reproduce the higher resolution. For example, a monitor may display an image at 72 dpi, even though the image is at 600 dpi. In general, choose the lowest dpi setting that will meet your needs.

mLarge images take longer to print, and the quality of the printed version is still limited by the capabilities of the printer.

mLarge images take longer to scan, save, view, and manipulate.

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