Felicity Lawrence wrote: >The problem occurs when we view our sample with our 60x Pl Apo objective 1.4 >oil (LEICA lens). The image becomes non-existent or ghost-like. A pale >"shadow" only is seen, with no detail visible at all.... We have the same problem with our Leica plan apo 63x/1.4 oil lens. The explanations is that this lens is not UV transparent. Leica has solved this problem and they now offer also a UV transparent plan apo 63/1.4 oil lens. Hope this helps, Sepp D. Kohlwein ************************************************************************ Sepp D. Kohlwein Genetics and Molecular Biology Group Department of Biochemistry and Food Chemistry Technical University Graz phone: ++43 (316) 873-6456 Petersgasse 12 fax: ++43 (316) 873-6952 A 8010 Graz, Austria e-mail [log in to unmask] ************************************************************************