Archived posting to the Leica Users Group, 2000/08/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]ralph fuerbringer wrote: > > schwalberg did nothing without a reason. after making measurements to a > 1000th of an mm of a ng collapsible erected, he carried the lens around for > several months, collapsing and extending thousands of times at odd moments. > he repeated the measurements several times during this test. variations > from the start point to the finish convinced him to leave a new lens > extended to guarantee the kind of lasting precision he demanded.long before > this test i discussed with bob why zeiss stopping making a collapsable 50f2 > sonnar: to guarantee precision. another factor to consider: during the time > lag to save a centimeter or so you could loose the picture. ><Snip> My wife Karens lens on her M6 is the current 50mm collapsible Elmar. She has got the collapsible action down as other aspects of the use of this lens. I don't borrow it. It's best used by one person. But some day will perhaps do a comparison test check against my 50mm Summicron to see if differences are evident. Mark Rabiner And I wonder how the Elmar stacks up against the Summicron?! Battle of the collapsibles!!