sane-coolscan3(5) SANE Scanner Access Now Easy sane-coolscan3(5)
NAME
sane-coolscan3 - SANE backend for Nikon Coolscan film scanners
DESCRIPTION
The sane-coolscan3 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.
At present, the following scanners are known to work with this backend:
Model: Connection Type
--------------------------- -------------------
LS-30 (Coolscan III) SCSI
LS-40 ED (Coolscan IV) USB
LS-50 ED (Coolscan V) USB
LS-2000 SCSI
LS-4000 ED IEEE 1394
LS-8000 ED IEEE 1394
Please send mail to sane-devel@alioth-lists.debian.net to report
successes or failures.
OPTIONS
The options the backend supports can either be selected through command
line options to programs like scanimage(1) or through GUI elements in
xscanimage(1) or xsane(1).
Valid command line options and their syntax can be listed by using:
scanimage --help -d coolscan3:<interface>:<device>
where <interface> and <device> specify the device in question, 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(1):
--frame <n>
This option specifies which frame to operate on, if a motorized
film strip feeder or APS adapter are used. The frame number <n>
ranges from 1 to the number of frames available, which is sensed
each time the backend is initialized (usually each time you start
the frontend).
--subframe <x>
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 information.
--depth <n>
Here <n> 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 balance, while --ae will adjust
each channel separately.
--exposure
Multiply all exposure times with this value. This allows exposure
correction without modifying white balance.
--load Load the next slide when using the slide loader (SF-200 bulk
loader only).
--eject
Eject the film strip or mounted slide when using the slide loader.
--reset
Reset scanner. The scanner will perform the same action as when
power is turned on: it will eject the film strip (with the SF-200
bulk loader) 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 /opt/local/etc/sane.d/coolscan3.conf specifies the
device(s) that the backend will use. Owing to the nature of the supported
connection types SCSI, USB, and IEEE 1394, the default configuration file
supplied with the SANE distribution should work without being edited.
Each line in the configuration file is either of the following, where all
entries are case-sensitive:
blank or starting with a '#' character
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 known identifiers. This is the default
action when no configuration file is present.
a line of the form <interface>:<device>
Here <interface> can be one of "scsi" or "usb", and <device> is
the device file of the scanner. Note that IEEE 1394 devices are
handled by the SBP-2 module in the kernel and appear to SANE as
SCSI devices.
FILES
/opt/local/lib/sane/libsane-coolscan3.a
The static library implementing this backend.
/opt/local/lib/sane/libsane-coolscan3.so
The shared library implementing this backend (present on systems
that support dynamic loading).
/opt/local/etc/sane.d/coolscan3.conf
Configuration file for this backend, read each time the backend is
initialized.
ENVIRONMENT
SANE_DEBUG_COOLSCAN3
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 recommended.
Linux kernels prior to 2.4.19 had a patch that truncated INQUIRY data
from IEEE 1394 scanners to 36 bytes, discarding vital information about
the scanner. The IEEE 1394 models therefore only work with 2.4.19 or
later.
No real bugs currently known, please report any to the SANE developers'
list.
AUTHORS
coolscan3 written by A. Zummo <a.zummo@towertech.it>, based heavily on
coolscan2 written by Andras Major <andras@users.sourceforge.net>.
11 Jul 2008 sane-coolscan3(5)
sane-backends 1.2.1 - Generated Sat Feb 25 16:15:18 CST 2023