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Hello Michel and all We have had most success with a scanner designed for 35 mm slides. One of our museum staff devised a thin-section holder that has the same external dimensions as a 35 mm slide, into which the thin section and two polaroid films can be fitted. The whole thing drops in to a Nikon slide scanner which has autofocus capability. It does 4000 dpi (dots per inch) and produces excellent results. See examples at http://cms.eas.ualberta.ca/dif/?q=node/6 John Waldron On 2009-Nov-05, at 10:56 AM, Michel Bestmann wrote: > Hello all, > > Who has experience with scanning of thin sections with polarisation > foil? I used a HP Scanjet G4050 in the slide modus. However the > results are not convincing. I have tested several positions of the > thin section surface with respect to the glass of the scanner. The > images are always slightly out of focus. > > Cheers > Michel > > ------------------------------------------------------------------------------------------------------------------- > > Michel Bestmann Phone: +49 (0)9131-8529026 > GeoZentrum Nordbayern (0)9131-627448 > University Erlangen-Nuremberg mobile +49 (0)176 24828586 > Schlossgarten 5 > D-91054 Erlangen > Germany > > Email: [log in to unmask] > > web-page: > http://www.elektron-performance.de.vu > > SAHARA GEO-EXPLORER > http://www.sahara-geoexplorer.de > > ------------------------------------------------------------------------------------------------------------------- > ------------------------------------------------------------- John Waldron Ph.D., Dept. Earth & Atmospheric Sciences, 1-26 Earth Sciences Bldg, Univ. of Alberta, Edmonton, AB Canada T6G 2E3 On sabbatical leave 2009-10: Apt. #305 1326 Lwr. Water St. Halifax NS B3J3R3 Tel: 902 423 1281. email: [log in to unmask] ------------------------------------------------------------- University spam filters may reject some sources of mail. If this happens, try me at [log in to unmask]