http://www.mindat.org/u-1061.html The mindat.org user blog written by Volker Betz http://www.mindat.org/article.php/1688/Equipment+Test Mon, 06 May 2013 Published: Mon, 06 May 2013, Subject: Equipment Test http://www.mindat.org/article.php/1351/How+to+make+better+Backgrounds++for+Mineral+Specimen+Pictures Sun, 20 Nov 2011 Published: Sun, 20 Nov 2011, Subject: How to make better Backgrounds for Mineral Specimen Pictures http://www.mindat.org/article.php/1064/Optimal+f-stop+for+1%3A1+reproduction+scale Mon, 27 Dec 2010 Published: Mon, 27 Dec 2010, Subject: Optimal f-stop for 1:1 reproduction scale http://www.mindat.org/article.php/641/Picture+Labels Thu, 05 Jan 2012 Published: Thu, 05 Jan 2012, Subject: Picture Labels http://www.mindat.org/article.php/342/+Volker+Betz+-+Zeolites+and+other+Minerals+for+Exchange Mon, 14 Mar 2011 Published: Mon, 14 Mar 2011, Subject: Volker Betz - Zeolites and other Minerals for Exchange http://www.mindat.org/article.php/376/Mineral+Photography Mon, 12 Apr 2010 Published: Mon, 12 Apr 2010, Subject: Mineral Photography http://www.mindat.org/article.php/841/Printing+Collection+Labels+from+Spreadsheets Thu, 07 Jan 2010 Published: Thu, 07 Jan 2010, Subject: Printing Collection Labels from Spreadsheets http://www.mindat.org/article.php/293/Zeolites+from+Lanzarote Sun, 15 Jun 2008 Published: Sun, 15 Jun 2008, Subject: Zeolites from Lanzarote