Archived posting to the Leica Users Group, 1997/12/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In a message dated 97-12-19 16:59:12 EST, Jim wrote: << But actually, what I really objected to, was that the opinion is that long lenses focus past infinity just because of the temperature drift. This is not true. They focus past infinity so that a photographer, knowing the proper focusing process, can indeed critically focus on very distant objects with those very long lenses. Jim ======================================================= Darn it - I hate to agree with Jim, but in rephrasing his words, he is now absolutely correct; If I focus my 2000mm telescope on a distant star, our relatively close moon is also in focus - in order to obtain that plane I have to yo-yo back & forth so there has to be space after the true infinty position. Marvin (yo-yo) Moss