sane-coolscan2(5)        SANE Scanner Access Now Easy        sane-coolscan2(5)


       sane-coolscan2 - SANE backend for Nikon Coolscan film scanners


       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 back-

       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 (
       to report successes or failures.


       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 coolscan2:<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 scanim-

       --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).

              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  scanim-
              age(1),  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.

              Perform autofocus operation. Unless otherwise specified  by  the
              other options ( --focus-on-centre and friends), focusing is per-
              formed on the centre of the selected scan area.


       --ae   Perform a pre-scan to calculate exposure  values  automatically.
              --ae-wb  will maintain the white balance, while --ae will adjust
              each channel separately.

              Multiply all exposure times with this value. This  allows  expo-
              sure correction without modifying white balance.

       --load Load the next slide when using the slide loader (applies only to
              the SF-200 bulk feeder).

              Eject the film strip or  mounted  slide  when  using  the  slide

              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 feeder) and calibrate itself. Use this whenever the
              scanner refuses to load a film strip properly, as  a  result  of
              which --eject does not work.


       The  configuration  file /usr/local/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 IEEE 1394, the default con-
       figuration 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  com-

       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.


              The static library implementing this backend.

              The shared library implementing this backend (present on systems
              that support dynamic loading).

              Configuration  file for this backend, read each time the backend
              is initialized.


              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.


       sane-scsi(5), sane-usb(5), scanimage(1), xscanimage(1), xsane(1)


       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 (usu-
       ally when the user runs the frontend). In particular, if  there  is  no
       film  strip in the automatic film strip feeder when the backend is ini-
       tialized, 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

       No real bugs currently known, please report any to  the  backend  main-
       tainer or the SANE developers' email list.


       The    backend    is   written   and   maintained   by   Andras   Major

                                  11 Jul 2008                sane-coolscan2(5)

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