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Home > Scan > Scan from Your Computer (Mac) > TWAIN Driver Settings (Mac)
TWAIN Driver Settings (Mac)
• Item names and assignable values will vary depending on the machine.
• The Contrast setting is available only when selecting Gray (Error Diffusion), True Gray, or 24bit
Color from the Scan Type options.
1. Resolution
Select a scanning resolution from the Resolution pop-up menu. Higher resolutions take more memory and
transfer time, but produce a finer scanned image.
2. Scan Type
Select from a range of scan color depths.
• Black & White
Use for text or line art images.
• Gray (Error Diffusion)
Use for photographic images or graphics. (Error Diffusion is a method for creating simulated gray
images without using true gray dots. Black dots are put in a specific pattern to give a gray
appearance.)
• True Gray
Use for photographic images or graphics. This mode is more accurate because it uses up to 256
shades of gray.
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