Archived posting to the Leica Users Group, 1997/08/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 09:00 AM 8/4/97 -0400, Alf wrote: >Dennis Laney [(1995-2): Leica Collectors Guide. Hove Collectors Books, >p130-136], >says also, that the rigid Summicron has been "identical in all details" to >the screw version (p 132), and that this version was available till 1957. >Maybe someone knows the weight of the 6 lens Summicron. Than you (maybe) can >deduct, whether you have the 7 or 6 lens version. Well, Laney is wrong on this. (I've corresponded with him on this; he was formerly one of my publishers.) It has now been established that the collapsible and rigid/NF Summicron designs -- both of which are seven-element -- are slightly different in design. That's why the rigid/NF lens outperforms the collapsible, ever so slightly, on most lens tests. Marc msmall@roanoke.infi.net FAX: +540/343-7315 Cha robh bas fir gun ghras fir!