sane-coolscan3(5)        SANE Scanner Access Now Easy        sane-coolscan3(5)


       sane-coolscan3 - SANE backend for Nikon Coolscan film scanners


       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  de-
       velopment  can  not  and will not function properly from the very first

       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 to  report  suc-
       cesses 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 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 ar-
       gument  can be omitted to obtain information on the first scanner iden-
       tified. 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 (de-
              fault 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 scanimage,
              perform a batch scan with batch-count=2 to obtain the IR  infor-

       --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.

              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  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/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  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 know identifiers. This is the action
              taken 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 en-
              vironment 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  op-
       tions 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  initial-
       ized,  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 SANE developers'


       coolscan3 written by A. Zummo <>, based heavily  on
       coolscan2 written by Andras Major <>.

                                  11 Jul 2008                sane-coolscan3(5)

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