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Gray 256 Scales
Images scanned in this mode will show up to 256 shades of gray. If high quality copies of photographs or other continuous tone originals are desired, Gray 256 Scales is the best choice.
Gray 256 Scales provides accurate representation of black and white, and intermediate gray shades between black and white, for each individual pixel. It actually provides 256 shades, representing white by the value 255 and black by the value zero, with progressively lighter intermediate shades of gray by values from 1 through 254.
Halftone B/W
This scan mode uses various combinations of black and white pixels to simulate gray scales. While not the same level of image quality as the Gray 256 Scales image type, this image type is good for continuous tone images where smaller file size is more important than ideal image quality.
Lineart B/W
Lineart B/W mode is generally the best choice for printed text or
✔In both Halftone and Lineart modes, the resolution can only be set to 150, 200, or 300 dpi.
Resolution
The resolution setting determines the amount of information the scanner will capture in a resulting scanned image.
3 Scanning
Scanning 3.5