Archived posting to the Leica Users Group, 2006/06/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]If the main issue is data for light fall-off, then maybe its more of patterns of fall-off, and lenses with similar patterns get the same markings. Or, if all 90mm Elmarits are pretty close on degree of fall-off, then there is no need to distinguish them. 21-50mm's maybe more of an issue on the version. Maybe that's why only certain older lenses are supported, if their fall-of is unique, they do not get the specification. Tom Schofield On Jun 6, 2006, at 8:06 PM, Rei Shinozuka wrote: > it seems to me that this system can't be all that ambitious; the > leica document and "6-bit" name imply only 64 codes can be uniquely > identified. i'd guess this would mean the 7 focal lengths plus > tri-elmar plus macro adapter, times the number of maximum apertures. > this leaves not much address space to identify such subtleties as > 1st generation 90 summicron, 2nd generation, 3rd gen, etc. i'd guess > we could expect focal length and max aperture. maybe "asph" > designation. > it would not be able to record aperture used to make the photo for > tagging in EXIF. > > -rei > > > > On Jun06 22:32, Don Dory wrote: >> I suspect that Leica doesn't have the lenses mapped nor wants to >> spend the >> money to do the work. The lenses will mount and work just like >> they always >> did, but you might have to do a little PS work on the edges. No >> big deal. >> Really no worse than using your old Pen F lenses on your 330. :) >> >> Don >> don.dory@gmail.com >> >> >> On 6/6/06, B. D. Colen <bdcolen@comcast.net> wrote: >>> >>> Fascinating to note that lenses manufactured prior to 1994, and >>> only a few >>> of those, can be "upgraded." Gee, I didn't know that Leica has >>> made any >>> changes to its mount since 1954, and if it hasn't why can't every >>> M lens >>> be >>> upgraded? Could it be creeping Lobselescence? Not from the Leiks >>> of Leica! >>> ;-) >>> >>> >>> On 6/6/06 4:13 PM, "lambroving@att.net" <lambroving@att.net> wrote: >>> >>>> >>>> F.Y.I. >>>> >>>> Was just forwarded this detail from a friend in CS at Solms. >>>> Additional >>> detail >>>> possibly available after the Forum meeting next weekend. >>>> >>>> http://www.leica-camera.com/imperia/md/content/pdf/objektive/18.pdf >>>> >>>> William >>>> >>>> _______________________________________________ >>>> Leica Users Group. >>>> See http://leica-users.org/mailman/listinfo/lug for more >>>> information >>> >>> >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >>> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > -- > Rei Shinozuka shino@panix.com > Ridgewood, New Jersey > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information