From : eppublic <firstname.lastname@example.org> Sent : Thursday, October 13, 2005 2:26 PM To : Dan Chang Subject : Re: Summicron DR and rigid rumor | | | Inbox Hi Dan, I have read about this claim several times. It is not true. But fighting against ingrained myths is a mission impossible. There are very stubborn persons who want to declare the DR version as sacrosanct. The original documentation about the DR at the Solms archives does not mention anything special about the design or assembly. All the best Erwin Puts Dan Chang wrote: I have heard someone claimed that due to DR's close focus distance, Leitz has special QA or selection for DR's optical cells and the tolerance is tight than rigid version. Can you comment on this? thanks Dan See above e-mail In most of the arguments about myth of leica, compare to these who just use leica. 99% I am on Mr. Putz's side. at least he did MTF curve to back up his claim and he has the ability to access the leica techinque archive.