sane-canon(5) SANE Scanner Access Now Easy sane-canon(5)NAMEsane-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 com-
puter 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 Deit-
ers <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 "Fil-
ter->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 intensi-
ties; 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 fron-
tend can handle 16-bit intensities).
Negatives are handled by simple color inversion and may
require manual removal of blue discoloration.
FILES
/usr/freeware/lib32/sane/libsane-canon.a
The static library implementing this backend.
/usr/freeware/lib32/sane/libsane-canon.so
The shared library implementing this backend (pre-
sent 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 ALSOsane-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)
sane-backends 1.0.12 03 May 2001 sane-canon(5)
