Archived posting to the Leica Users Group, 1999/11/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]If Leica made any optical unit selection, it was probably based on focal length considerations rather than other optical performance such as resolution and contrast. The focal length of the goggle and the lens would have to be optimized within the focal length tolerances of both the lens and the goggle device. This is my guess. Ferrel Anderson