sane-canon man page on OpenMandriva

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

NAME
       sane-canon - SANE backend for Canon SCSI scanners

DESCRIPTION
       The  sane-canon	library	 implements  a	SANE (Scanner Access Now Easy)
       backend that provides access to the following Canon  flatbed  and  film
       scanners:

	      CanoScan 300
	      CanoScan 600
	      CanoScan FB620S
	      CanoScan FB1200S
	      CanoScan FS2700F
	      CanoScan FS2710S

       Parallel	 port  and USB scanners are not supported by this backend; see
       the manual pages	 for  sane-canon_pp  and  sane-canon630u  for  further
       information.

       IMPORTANT: This is beta code. We tested the code on the scanners listed
       above, using the computers and operating systems available to  us,  but
       we  cannot  guarantee  that  the backend will work smoothly with future
       operating systems, SCSI adapters,  SANE	frontend  programs,  or	 Canon
       scanners	 not  contained in the list above. In some cases your computer
       might even hang.	 It  cannot  be	 excluded  (although  we  consider  it
       extremely unlikely) that your scanner will be damaged.

       That  said,  TESTERS ARE WELCOME. Send your bug reports and comments to
       Manuel Panea <mpd@rzg.mpg.de>; for questions concerning the  FB620  and
       FB1200S	contact	 Mitsuru  Okaniwa <m-okaniwa@bea.hi-ho.ne.jp>, for the
       FS2710S Ulrich Deiters <ukd@xenon.pc.uni-koeln.de>.

TIPS (FS2700F)
       Scanning either slides or negatives has been found  to  require	rather
       large gamma corrections of about 2.2 to 2.4 (same value for red, green,
       and blue). It is recommended to use the automatic exposure controls  of
       the frontend xsane for best results.

       The  "Auto  Focus"  function  triggers  a special pass to determine the
       focus value. After that, the real scanning pass takes place.

       Even with "Auto Focus" turned on, the scanned image is often a bit  too
       blurred.	 Using the GIMP to do a "Filter->Enhance->Sharpen" at about 40
       to 60 improves the image considerably.

TIPS (FS2710S)
       Gamma corrections are done not by the scanner, but by the backend.  The
       scanner	is  always  run in 12-bit mode. In "color" mode the image data
       are corrected for gamma, shadow point,  etc.,  and  then	 truncated  to
       8-bit  intensities;  the	 default gamma value is 2.0. In "raw" mode the
       image data are exported without corrections as 16-bit intensities; this
       mode  can  be recommended if extensive adjustments have to be made to a
       picture (and if the frontend can handle 16-bit intensities).

       Negatives are handled by simple color inversion and may require	manual
       removal of blue discoloration.

FILES
       /usr/lib64/sane/libsane-canon.a
	      The static library implementing this backend.

       /usr/lib64/sane/libsane-canon.so
	      The shared library implementing this backend (present on systems
	      that support dynamic loading).

ENVIRONMENT
       SANE_DEBUG_CANON
	      If the library was compiled with	debug  support	enabled,  this
	      environment  variable controls the debug level for this backend.
	      Higher debug levels increase the verbosity of the output.

	      Example: export SANE_DEBUG_CANON=4

SEE ALSO
       sane-scsi(5)
       http://www.rzg.mpg.de/~mpd/sane/
       doc/canon.install2700F.txt (installation of a CanoScan 2700F

AUTHOR
       Helmut Koeberle, Manuel Panea, and Markus Mertinat; FB620S and  FB1200S
       support by Mitsuru Okaniwa; FS2710S support by Ulrich Deiters
       Man page by Henning Meier-Geinitz (mostly based on canon.README)

				  11 Jul 2008			 sane-canon(5)
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