Archived posting to the Leica Users Group, 1997/12/05
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I was comparing a current M-50/2 (w. pull-out hood) and a 35/2 ASPH to early-1970's versions and noted that I couldn't find any setscrews or retaining-rings on the current versions (although current 90/2 and the new 21 ASPH do have them evident) except for the ones affixing the rear lensmount. I remember someone of some authority saying that some of the newer lenses are held together with cement, and that they tend to come loose with use. In the dental field we use some phenomenal cements and resin-bonding materials which withstand extreme forces and a humid environment as well if not better than mechanical fasteners, but I would like to inquire if any users out there have experienced problems with newer lenses coming loose? Doc