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Crop tab
The crop tab lets you specify full automatic cropping, full
manual cropping, and a range of options in-between.
Note that a VueScan also lets you change these
values by using the mouse in the preview image.
- Region
- The scan region is the subset of the total scan area
that gets scanned to produce a preview. This option can be
set up so the region can be specified manually, so it can be
the maximum possible size or so it can be the default region
size for the device.
- Region X/Y offset/size (mm)
- These options describe the size of the
scan region. They are relative to the upper left-hand corner of the
image, negative, or slide.
Note that you should be careful to not set the Scan y size to a value
larger than 190.5 mm on the PhotoSmart scanners, since there have been
reports of scratched film when scanning longer lengths than this.
- Auto crop
- This option controls whether VueScan automatically
computes the X/Y offset (mm) option, or whether it is entered
manually.
If you turn off the "Crop|Auto crop" and "Device|Auto exposure"
options, then pressing the "Scan" button won't first do a
preview scan. This can save time when batch scanning.
- X/Y offset (mm)
- This is the offset in the scan region
of the start of the image data.
- Crop size
- This option lets you choose how the size of
the cropped area is chosen. "Manual" lets you enter all the
crop size options manually, "Auto" computes all the values
using heuristics, "Maximum" crops the entire area specified
in the Device tab, and other values let you specify some
standard crop sizes.
- X/Y size (mm)
- This is the size in millimeters of the image
area that you are cropping. If set to zero, the entire scanned area
will be used.
- X/Y images
- Set these options to the maximum number of images
to look for in the horizontal/vertical direction. It should normally be 1
except when scanning film strips on the PhotoSmart. in which case
it should be a number greater than or equal to the number of
images on the film strip being scanned.
If a film strip doesn't crop correctly, try reducing this value to the
exact number of images on the film strip. This may be
necessary if you have tape on part of the negative strip.
- X/Y spacing
- This is the approximate size in millimeters of
the spacing between the start of images in the horizontal/vertical direction.
This value is only used if the number of images in the
horizontal/vertical direction is greater than 1.
- Landscape
- If set, the size specified in the "Crop size" option
is oriented in the landscape direction (i.e. it's wider than it is tall).
- Buffer (%)
- This is the size of the buffer area inside the cropped
area to ignore when computing the color balance of the image. It is used
to reduce the effect of a small amount of black or white border
on the overall image color balance.
- Border (%)
- This is the amount to increase the cropped size
of an image. This increased border area isn't used for
computing the color correction of an image. Use this value to
add white (or black) space around an image if you want to later crop
the images by hand, or if you want to capture the complete area
around an image.