Archived posting to the Leica Users Group, 2000/11/11
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Erwin have you tried this film with an enlarger using a Koehler system point light source. To clarify ,in the Koehler method of illumination you focus a magnified image of the light source on the on the lower focal plane of the condenser by means of a lamp condenser. The condenser throws this image into infinity but is picked up by the enlarging lens so that another image of the light source is formed in the rear focal plane of the enlarging lens. This is explained in detail in some of the old Leica Manuals. (1951 p397) The old Durst 606 seems to use this principle when used with a point source. I know that Brett Weston used a large Durst and this system for photographing rocks in Hawaii. There will be an great increase in contrast which may be helpful with this new film. Please keep us informed about your work. Bill