Download VueScan User's Guide

VueScan User's Guide
and the latter can do batch scanning by either pressing "Eject" to feed manually or setting "Device|Auto eject"
to "Scan" and "Device|Auto scan" to "Scan device".
You can significantly speed up batch scanning on some scanners by setting two options so the preview won't
be done when you do a scan. To do this, set the cropping for all the frames, then clear "Crop|Crop auto
position". In addition, if the "Device|Lock exposure" option is displayed, turn it on and set "Device|RGB
exposure" to either "1" or a value greater than one that won't overexpose any of the images.
Default options
VueScan does automatic cropping and automatic white balance, and then lets you use an external image
viewer to tweak the cropping (if you desire) and tweak the color balance (if necessary). A lot of effort has
been put into VueScan to make it accurately crop and white−balance scans, so the amount of manual
adjustment needed is minimal − something you'll appreciate when batch scanning large numbers of images.
VueScan's user interface has a large number of options, but the only thing you normally need to do is set the
frame number to scan (using "Device|Frame number") and then press the "Scan" button. If you've changed a
lot of options and things aren't working right, just reset all the options to their default values with the
"File|Default options" command.
How VueScan Works
There are two types of scans − a preview and a scan. The main difference between the preview and the scan is
that no files are written when doing a preview and a larger area is scanned for the preview (so you can crop
it).
A scan involves reading the raw scan data (from one of 3 sources), processing the raw scan data to get
accurate colors, and writing the processed image data (to up to 4 destinations).
The raw scan data can come from one of:
• Scanner ("Preview" or "Scan" buttons)
• Memory buffer from previous scan ("Save" button)
• Raw scan file from previous scan ("Device|Scan from" "Disk")
The processed image data for a preview goes to the Preview tab. The processed image data for a scan can go
to any combination of:
• TIFF file ("Files|Save TIFF file")
• JPEG file ("Files|Save JPEG file")
• index file ("Files|Save index file")
• raw file ("Files|Save raw file")
Note that there is a separate memory buffer for each frame, and you can change between frames without doing
another preview or scan. However, the total amount of memory that can be used for this is limited by
"Prefs|Preview mem (MB)" and "Prefs|Scan mem (MB)". If more memory is needed, the oldest memory
buffers are freed until there is enough memory for a new preview or scan.
Using Raw Scan Files
Introduction
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