Archived posting to the Leica Users Group, 2008/02/28
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Rei, Could they be concerned that, while mounting a collapsed lens, before it is constrained by the mounting flange, one could move the extended tube around enough to damage something in the lens cavity? Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Rei Shinozuka" <shino@panix.com> To: "Leica Users Group" <lug@leica-users.org> Sent: Thursday, February 28, 2008 2:42 PM Subject: Re: [Leica] collapsible lenses on the M8...? >i have to wonder if there was some other reason besides physical > clearance why Leica so strongly dissuades the use of collapsible > lenses on the M8. > > as evidenced on page 86 of the manual under the section Leica M Lenses: > Important: > > * Can be used, but risks damaging the camera > > Lenses with retractible tubes can only be used WITH THEIR > TUBES EXTENDED i.e., their tubes must NEVER be > retracted into the LEICA M8. > > This is *not* the case with the current Macro-Elmar-M > 90mm f/4, whose tube does not protrude into the > camera body even when retracted. It can therefore be used > without any restrictions. > > (the all-caps words are their italic emphasis) > > -rei > > > On Feb28 12:24, Leonard Taupier wrote: >> I'm pretty sure Henning and certainly Jeffrey have more collapsible >> lenses then I do but here are the lenses that I have that are fine >> when collapsed in the M8. >> >> LTM 5cm/3.5 Elmar (made in 1946) this has the longest recess but >> still clears. >> LTM 50mm /2 Summicron (1955) >> LTM 50mm/ 2 Summitar (1949) >> LTM 5cm/2 Summar (1937) >> M 50mm/2 Summicron (1954) >> M 90mm/4 micro-Elmar (current model) >> >> Len >> >> >> On Feb 28, 2008, at 10:59 AM, Henning Wulff wrote: >> >> >>the old 50 summicron collapsible does. >> >> >> >>-rei >> >> >> >>On Feb27 14:01, Henning Wulff wrote: >> >>> At 12:45 PM -0700 2/27/08, Steve Barbour wrote: >> >>> >On Feb 27, 2008, at 11:43 AM, Henning Wulff wrote: >> >>> > >> >>> >>> Anyone out there using collapsible lenses on their M8, like me? >> >>> >>> >> >>> >>> so what do you use to keep them from collapsing? >> >>> >>> >> >>> >>> Yeah, yeah....I know, rubber bands...so what else is out there >> >>> >>>that will work, >> >>> >>> >> >>> >>> and guarantee that they won't collapse, and screw the pooch? >> >>> >>> >> >>> >>> >> >>> >>> Anything? >> >>> >>> >> >>> >>> >> >>> >>> thanks, Steve >> >>> >>> >> >>> >> >> >>> >> Just let them collapse. The only one that _might_ have a problem >> >>> >>is the 90/4 (I haven't tried that). All the others are fine. >> >>> > >> >>> > >> >>> >no kidding Henning... ! We are under the false ! impression >> >>> >(created by Leica) that you can't use collapsibles on the M8.... >> >>> > >> >>> > >> >>> >thanks, Steve >> >>> >> >>> Hi Steve, >> >>> >> >>> I checked clearances early on, and the only lens I have that I >> >>> wouldn't put on the M8 is my Hologon. Even the old collapsible >> >>>Nickel >> >>> Elmar I tried recently can be collapsed and still have about 4mm >> >>> clearance. The 2.8 Elmars and f/2 lenses don't collapse as much, so >> >>> there is even more clearance from the shutter. >> >>> >> >>> >> > >> > >> >Hi Rei, >> > >> >I'm not sure I understand what you're saying. >> > >> >The old Summicron does what? Collapse as much as the Nickel Elmar? >> >I don't think so; the travel of the barrel into the body is less. >> >In any case, there is no problem collapsing the lens into the M8. >> > >> >Regards, >> > >> >Henning >> > >> >_______________________________________________ >> >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 >