1sane-canon(5) SANE Scanner Access Now Easy sane-canon(5)
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6 sane-canon - SANE backend for Canon SCSI scanners
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9 The sane-canon library implements a SANE (Scanner Access Now Easy)
10 backend that provides access to the following Canon flatbed and film
11 scanners:
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13 CanoScan 300
14 CanoScan 600
15 CanoScan FB620S
16 CanoScan FB1200S
17 CanoScan FS2700F
18 CanoScan FS2710S
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20 Parallel port and USB scanners are not supported by this backend; see
21 the manual pages for sane-canon_pp and sane-canon630u for further
22 information.
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24 IMPORTANT: This is beta code. We tested the code on the scanners listed
25 above, using the computers and operating systems available to us, but
26 we cannot guarantee that the backend will work smoothly with future
27 operating systems, SCSI adapters, SANE frontend programs, or Canon
28 scanners not contained in the list above. In some cases your computer
29 might even hang. It cannot be excluded (although we consider it
30 extremely unlikely) that your scanner will be damaged.
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32 That said, TESTERS ARE WELCOME. Send your bug reports and comments to
33 Manuel Panea <mpd@rzg.mpg.de>; for questions concerning the FB620 and
34 FB1200S contact Mitsuru Okaniwa <m-okaniwa@bea.hi-ho.ne.jp>, for the
35 FS2710S Ulrich Deiters <ukd@xenon.pc.uni-koeln.de>.
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38 Scanning either slides or negatives has been found to require rather
39 large gamma corrections of about 2.2 to 2.4 (same value for red, green,
40 and blue). It is recommended to use the automatic exposure controls of
41 the frontend xsane for best results.
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43 The "Auto Focus" function triggers a special pass to determine the
44 focus value. After that, the real scanning pass takes place.
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46 Even with "Auto Focus" turned on, the scanned image is often a bit too
47 blurred. Using the GIMP to do a "Filter->Enhance->Sharpen" at about 40
48 to 60 improves the image considerably.
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51 Gamma corrections are done not by the scanner, but by the backend. The
52 scanner is always run in 12-bit mode. In "color" mode the image data
53 are corrected for gamma, shadow point, etc., and then truncated to
54 8-bit intensities; the default gamma value is 2.0. In "raw" mode the
55 image data are exported without corrections as 16-bit intensities; this
56 mode can be recommended if extensive adjustments have to be made to a
57 picture (and if the frontend can handle 16-bit intensities).
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59 Negatives are handled by simple color inversion and may require manual
60 removal of blue discoloration.
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63 /usr/lib64/sane/libsane-canon.a
64 The static library implementing this backend.
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66 /usr/lib64/sane/libsane-canon.so
67 The shared library implementing this backend (present on systems
68 that support dynamic loading).
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71 SANE_DEBUG_CANON
72 If the library was compiled with debug support enabled, this
73 environment variable controls the debug level for this backend.
74 Higher debug levels increase the verbosity of the output.
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76 Example: export SANE_DEBUG_CANON=4
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80 sane-scsi(5)
81 http://www.rzg.mpg.de/~mpd/sane/
82 doc/canon.install2700F.txt (installation of a CanoScan 2700F
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85 Helmut Koeberle, Manuel Panea, and Markus Mertinat; FB620S and FB1200S
86 support by Mitsuru Okaniwa; FS2710S support by Ulrich Deiters
87 Man page by Henning Meier-Geinitz (mostly based on canon.README)
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91 11 Jul 2008 sane-canon(5)