SANE Scanner Access Now Easy sane-coolscan2(5)
NAME
sane-coolscan2 - SANE backend for Nikon Coolscan film
scanners
DESCRIPTION
The sane-coolscan2 library implements a SANE (Scanner Access
Now Easy) backend that provides access to Nikon Coolscan
film scanners. Some functions of this backend should be
considered beta-quality software. Most functions have been
stable for a long time, but of course new development can
not and will not function properly from the very first day.
Please report any strange behaviour to the maintainer of the
backend.
At present, the following scanners are known to work with
this backend:
Model: Connection Type
--------------------------- -------------------
LS-30 (Coolscan I) SCSI
LS-2000 SCSI
LS-40 ED (Coolscan IV) USB
LS-4000 ED IE 1394
LS-8000 ED IE 1394
Please send mail to the backend author
(andras@users.sourceforge.net) to report successes or
failures.
OPTIONS
The options the backend supports can either be selected
through command line options to programs like scanimage or
through GUI elements in xscanimage or xsane.
Valid command line options and their syntax can be listed by
using
scanimage --help -d coolscan2::
where and specify the device in ques-
tion, as in the configuration file (see next section). The
"-d" parameter and its argument can be omitted to obtain
information on the first scanner identified. Use the command
scanimage -L
to list all devices recognized by your SANE installation.
The options should be fully described by the description or
tooltips given by frontend. Here is a description of some of
the most important options, in the syntax with which they
must be supplied to scanimage:
--frame
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This option specifies which frame to operate on, if a
motorized film strip feeder or APS adapter are used.
The frame number ranges from 1 to the number of
frames available, which is sensed each time the backend
is initialized (usually each time you start the fron-
tend).
--subframe
This option shifts the scan window by the specified
amount (default unit is mm).
--infrared=yes/no
If set to "yes", the scanner will read the infrared
channel, thus allowing defect removal in software. The
infrared image is read during a second scan, with no
options altered. The backend must not be restarted
between the scans. If you use scanimage, perform a
batch scan with batch-count=2 to obtain the IR informa-
tion.
--depth
Here can either be 8 or the maximum number of bits
supported by the scanner (10, 12, or 14). It specifies
whether or not the scanner reduces the scanned data to
8 bits before sending it to the backend. If 8 bits are
used, some information and thus image quality is lost,
but the amount of data is smaller compared to higher
depths. Also, many imaging programs and image formats
cannot handle depths greater than 8 bits.
--autofocus
Perform autofocus operation. Unless otherwise specified
by the other options ( --focus-on-centre and friends),
focusing is performed on the centre of the selected
scan area.
--ae-wb
--ae Perform a pre-scan to calculate exposure values
automatically. --ae-wb will maintain the white bal-
ance, while --ae will adjust each channel separately.
--exposure
Multiply all exposure times with this value. This
allows exposure correction without modifying white bal-
ance.
--load
Load the next slide when using the slide loader.
--eject
Eject the film strip or mounted slide when using the
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SANE Scanner Access Now Easy sane-coolscan2(5)
slide loader.
--reset
Reset scanner. The scanner will perform the same action
as when power is turned on: it will eject the film
strip and calibrate itself. Use this whenever the
scanner refuses to load a film strip properly, as a
result of which --eject does not work.
CONFIGURATION FILE
The configuration file /etc/sane.d/coolscan2.conf specifies
the device(s) that the backend will use. Owing to the nature
of the supported connection types SCSI, USB, and IE 1394,
the default configuration file supplied with the SANE dis-
tribution should work without being edited.
Each line in the configuration file is either of the follow-
ing, where all entries are case-sensitive:
blank or starting with a '#'
These lines are ignored, thus '#' can be used to
include comments.
containing only the word "auto"
This instructs the backend to probe for a scanner by
scanning the buses for devices with know identifiers.
This is the action taken when no configuration file is
present.
a line of the form :
Here can be one of "scsi" or "usb", and
is the device file of the scanner. Note that
IE 1394 devices are handled by the SBP-2 module in
the kernel and appear to SANE as SCSI devices.
FILES
/usr/lib/sane/libsane-coolscan2.a
The static library implementing this backend.
/usr/lib/sane/libsane-coolscan2.so
The shared library implementing this backend (present
on systems that support dynamic loading).
/etc/sane.d/coolscan2.conf
Configuration file for this backend, read each time the
backend is initialized.
ENVIRONMENT
SANEDEBUGCOLSCAN2
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If the library was compiled with debug support enabled,
this environment variable controls the debug level for
this backend. E.g., a value of 128 requests all debug
output to be printed. Smaller levels reduce verbosity.
SEE ALSO
sane-scsi(5), sane-usb(5), scanimage(1), xscanimage(1),
xsane(1)
BUGS
Currently, the SANE protocol does not allow automatically
updating options whenever the hardware changes. Thus the
number of choices for the --frame option will be fixed when
the backend is initialized (usually when the user runs the
frontend). In particular, if there is no film strip in the
automatic film strip feeder when the backend is initialized,
the frame option will not appear at all. Also, restarting
the frontend after swapping film adapters is strongly recom-
mended.
Linux kernels prior to 2.4.19 had a patch that truncated
INQUIRY data from IE 1394 scanners to 36 bytes, discarding
vital information about the scanner. The IE 1394 models
therefore only work with 2.4.19 or later.
No real bugs currently known, please report any to the back-
end maintainer or the SANE developers' email list.
AUTHORS
The backend is written and maintained by Andr['a]s Major
(andras@users.sourceforge.net).
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
ATRIBUTE TYPE ATRIBUTE VALUE
Availability SUNWsane-backend
Interface Stability Uncommitted
NOTES
Source for SANE is available on http:/opensolaris.org.
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