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The Crop palette offers three methods for adjusting output size:
• Keep this crop
Choose this option when you want to select the precise
area to be scanned using the mouse, then adjust the output
resolution and size according to how the image will be used.
When using this option, first select the area to be scanned
using the mouse, then enter the desired output resolution in
the Resolution text box. After choosing the units for out-
put size from the menu to the right of the output size text
boxes, you can either adjust output size using the Scale slider,
or enter the output size directly in either the Width or Height
text boxes (the other dimension will change automatically to
maintain the same proportions as the crop selected in the
preview area).
Selecting Keep this output size fixes the physical dimensions
of the image when output on a printer or monitor. Conse-
quently, when pixels is selected as the units for output size,
adjusting resolution will cause the values shown in the output
size text boxes to change. The physical dimensions of the image
will however remain constant.
Reference: The Tool Chest
• Keep this output size
Choose this option when you want to select the general
area to be scanned using the mouse, then specify the exact
dimensions of the image to fit it into a pre-determined space,
for example in a magazine or on a web page. When using this
option, select a resolution and enter the desired output size
in the Width and Height text boxes after choosing a unit
other than pixels for output size. You can then select the
area to be scanned using the mouse (the proportions of the
crop will be adjusted to match the values entered for output
size). This option is useful when the image has to print at a
specified size.
• Keep this file size
Choose this option when you want to specify the exact file
size of the final image, for example to keep file sizes to a
minimum for storage or electronic transfer, or because you
have been asked for a file of a certain size. When using this
option, first enter the desired file size and then select the
area to be scanned using the mouse. This option is most
useful when scanning images for e-mail or the web.
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