User`s guide
INDEX
59
Advanced Option: This option is displayed when the scanner's lamp can be controlled.
Input | Auto eject
This option controls when the media is ejected (assuming the scanner is capable of
ejecting media). It can be ejected after a preview, or a scan, or when VueScan exits.
The media can be ejected manually with the "Scanner | Eject" command.
When Input | Batch scan (p. 53) is set, ejection will occur after the batch is complete.
Advanced Option: This option is displayed when the scanner hardware can eject the
media.
Input | Auto repeat
This option will simulate repeatedly pressing theScan button (p. 47) after a time delay.
Advanced Option: This option is always displayed.
Input | Number of samples
This option is available for scanners that support multi-sampling. As the scanner head
passes over the media it makes multiple exposures for each location. The results for
all samples are averaged.
This is a useful feature because any one exposure may be inaccurate, resulting in noise
in the output. Noise will appear as one pixel whose color or tone is different than
surrounding pixels. By taking multiple samples and averaging the results, the effect of
inaccurate exposure is reduced.
This option will slow down scanning because the scanner is doing more. You should
experiment with your scanner to see which balance of speed and accuracy is
appropriate.
Number of samples is similar to Number of passes. Multi-sampling is preferable as
the scanner head is positioned once, which ensures that the same area will be
exposed for each sample. Multi-sampling is available only on a limited number of
scanners.
Advanced Option: This option is displayed when the scanner is capable of
multi-sampling.
Input | Number of passes
This option provides a similar function as the Number of samples option, but does not
require the scanner to provide hardware support for multi-sampling. Each pass causes
a full scan. After all passes are complete, the results are averaged, and the average
is saved.
This is a useful feature because any one exposure may be inaccurate, resulting in noise