HP 4400C HP Scanjet 4400C/5400C Series Scanner Mac - (English) User Manual - Page 46

Changing resolution, Changing contrast, Tools, Resolution

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46 Scanning from HP Precisionscan Pro Changing resolution Resolution determines the amount of data in a scanned image. The scanning software chooses the optimal resolution based on the output type. This resolution generally does not need to change. If you do change the resolution, choose one no higher than the capabilities of the monitor or printer and one appropriate for the type of scanned image. For example, to print on a 600 dpi printer, choose 600 for black and white bitmap images, but choose only 200 for color or grayscale images. These resolutions produce optimal quality while keeping file sizes small. Selecting higher resolutions for color images increases file size while not increasing quality. If you double the resolution, the file size quadruples. Large file sizes can prevent you from doing certain tasks, such as e-mailing, or can take up too much space on your computer. For help choosing a resolution based on the type of original item and destination, see "Tips for best image quality" on page 69. On the Tools menu, click Resolution. Note: When the Resolution tool is enabled, a checkmark appears beside the Resolution command in the Tools menu, and the Resolution tool appears in the toolbar. 1 Open the Resolution tool, if it is not already open. 2 Do one of the following: l Select a value from the list. l Type a value between 12 and 999,999 in the field and press ENTER. The resolution changes as soon as you select a value. Back to TOC 1 Open the Resolution tool, if it is not already open. 2 Click . Changing contrast The contrast is controlled by the midtone, highlight, and shadow settings. See "Changing midtones" on page 50, "Changing highlights" on page 51, and "Changing shadows" on page 52.

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46
Scanning from HP Precisionscan Pro
Back to TOC
Changing resolution
Resolution determines the amount of data in a scanned image. The
scanning software chooses the optimal resolution based on the output
type. This resolution generally does not need to change.
If you do change the resolution, choose one no higher than the
capabilities of the monitor or printer and one appropriate for the type of
scanned image. For example, to print on a 600 dpi printer, choose 600
for black and white bitmap images, but choose only 200 for color or
grayscale images. These resolutions produce optimal quality while
keeping file sizes small.
Selecting higher resolutions for color images increases file size while
not increasing quality. If you double the resolution, the file size
quadruples. Large file sizes can prevent you from doing certain tasks,
such as e-mailing, or can take up too much space on your computer.
For help choosing a resolution based on the type of original item and
destination, see
"Tips for best image quality" on page 69
.
On the
Tools
menu, click
Resolution
.
Note:
When the Resolution tool is enabled, a checkmark
appears beside the
Resolution
command in the
Tools
menu, and the Resolution tool appears in the toolbar.
1
Open the Resolution tool, if it is not already open.
2
Do one of the following:
l
Select a value from the list.
l
Type a value between 12 and 999,999 in the field and press
E
NTER
.
The resolution changes as soon as you select a value.
1
Open the Resolution tool, if it is not already open.
2
Click
.
Changing contrast
The contrast is controlled by the midtone, highlight, and shadow
settings. See
"Changing midtones" on page 50
,
"Changing highlights"
on page 51
, and
"Changing shadows" on page 52
.