User`s guide

INDEX
68
area that is cropped, it will tend to include areas of white (or black) in the resulting
image; if these parts of the image were not ignored when computing color balance, they
could skew the results.
Border is a percentage relative to the dimensions of the cropped area, up to the
maximum size of the preview area.
Border can also be set as a negative value in order to reduce the size of the image.
Compare this option to Crop | Buffer (%) (p. 68).
Advanced Option: This option is always displayed.
Crop | Buffer (%)
This causes VueScan to ignore some image data just inside the edge of the crop box of
the image when computing the color balance of the image. Unlike Crop | Border (%)
(p. 67), the buffer does not affect the size of the image.
This option is useful to account for sizing or positioning errors of the crop box that
incorrectly include parts of the image from its outer edges. These white or black
areas can significantly skew the calculation of color balance if not ignored.
Buffer is a percentage relative to the dimensions of the image area. Because it
includes a Crop | Border (%) (p. 67) it should always be set slightly higher than Border.
Compare this option to Crop | Border (%) (p. 67).
Advanced Option: This option is always displayed.
Crop | Preview area
The preview area is the subset of the total scan area that gets scanned to produce a
preview. This option can be set manually, set to the same as the last preview, set to
the crop box, set to the default or set to the maximum possible.
Note: if you set a smaller preview area, the scanner head will move only far enough to
cover that area. This can reduce the amount of time needed to scan, especially on
flatbed scanners. Because the stepper motor that moves the scan head is often the
factor that limits speed, it also makes sense to orient images in landscape (and set the
preview area accordingly).
Advanced Option: This option is always displayed.
Crop | Preview X/Y offset/size
These options describe the size of the preview area. They are relative to the upper
left-hand corner of the image, negative, or slide.
Advanced Option: This option is displayed whenCrop | Preview area (p. 68) isn't set to
"Maximum".