Archived posting to the Leica Users Group, 2007/12/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hi Rose For a simple focusing ground glass (ie no fresnel before it) you have to bring focus to the ground surface of glass. ed El 01/12/2007, a las 04:54, <editor@frontenachouse.com> <editor@frontenachouse.com> escribi?: > This is a large-format query more than a Leica one, but since this > group boasts so many august polymaths, I figured it would be the > logical source for advice. > > Here's the question: In calculating the distance from lens to the > ground glass, should the measurement be made from the front of the > ground glass? or half way between the front and the back? or some > calculated plane between front and back? > > The ground glass itself is thick enough that basing measurements on > the incorrect plane would seriously screw up the focus. > > Thanks to one and all who can help me with this. Rose > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >