sane-coolscan2(5) SANE Scanner Access Now Easy sane-coolscan2(5)NAMEsane-coolscan2 - SANE backend for Nikon Coolscan film
scanners
DESCRIPTION
The library implements a SANE (Scanner Access Now Easy)
backend that provides access to Nikon Coolscan film scan-
ners. 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 III) SCSI
LS-2000 SCSI
LS-40 ED (Coolscan IV) USB
LS-4000 ED IEEE 1394
LS-8000 ED IEEE 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:<interface>:<device>
where <interface> and <device> 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 com-
mand
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 <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 spec-
ified 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 sepa-
rately.
--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.
--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 and calibrate itself. Use this when-
ever the scanner refuses to load a film strip prop-
erly, as a result of which --eject does not work.
CONFIGURATION FILE
The configuration file /usr/free-
ware/etc/sane.d/coolscan2.conf specifies the device(s)
that the backend will use. Owing to the nature of the sup-
ported connection types SCSI, USB, and IEEE 1394, the
default configuration file supplied with the SANE distri-
bution should work without being edited.
Each line in the configuration file is either of the fol-
lowing, 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 know identi-
fiers. This is the action taken when no configura-
tion 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
/usr/freeware/lib32/sane/libsane-coolscan2.a
The static library implementing this backend.
/usr/freeware/lib32/sane/libsane-coolscan2.so
The shared library implementing this backend (pre-
sent on systems that support dynamic loading).
/usr/freeware/etc/sane.d/coolscan2.conf
Configuration file for this backend, read each time
the backend is initialized.
ENVIRONMENT
SANE_DEBUG_COOLSCAN2
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 ALSOsane-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, discard-
ing 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
backend maintainer or the SANE developers' email list.
AUTHORS
The backend is written and maintained by Andrs Major
(andras@users.sourceforge.net).
sane-backends 1.0.12 22/08/2002 sane-coolscan2(5)
