Archived posting to the Leica Users Group, 2010/01/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Len, Another thought that occurred to me was that frequently opening and collapsing the lens can pump dust into the inside of the camera. And lenses like my old 50/3.5 Elmar, with worn felt seals, have a lot of "wobble" when moving in and out. Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Leonard Taupier" <len-001 at verizon.net> To: "Leica Users Group" <lug at leica-users.org> Sent: Saturday, January 16, 2010 8:20 PM Subject: Re: [Leica] Collapsible 50mm Elmar and Summicron on M8 M9 > Rei, > > I think it may be a disclaimer in case something goes wrong when > inserting a lens with some sort of fault. As an example look at the end > of your Summitar. There are 3 fingers that have slots bent up to provide > a snug fit to the barrel when the lens is extended. If one of these > fingers get bent up too far it can hit the shutter in the collapsed > condition. Just an idea. Also I believe the old collapsible 90mm Elmar > can hit the shutter. > > Len > > > On Jan 16, 2010, at 8:30 PM, Rei Shinozuka wrote: > >> I only have 2 collapsibles, the summitar and summicron. (the summitar >> has the conical IR-cut filter created kindly for me by Len Taupier) i >> can't say what the long-term effect of constant collapsing of these >> lenses into the M8 is, but i have mounted both and collapsed both on the >> M8, and it won't smash the shutter or anything dramatic like that. on >> the other hand, when collapsing you do sometimes feel something contact >> inside when the lens is half-collapsed--i think it's the protrusions in >> the film chamber to the left and right behind the bayonet contacting the >> lens tube as it goes back. the lens continues to collapse without >> force. >> >> In summary: >> 1. you can fully collapse the lenses on an M8 >> 2. they don't smash the shutter. >> 3. the tube seems to gently contact something inside the film chamber, >> but there's no discernible damage. >> 4. officially the makers warn against collapsing these lenses, but it's >> not clear why. >> 5. since the fit of the back of the focus tube is tight inside when >> collapsed, i'd recommend not mounting and removing lenses when in >> collapsed state. >> >> -rei >> >> >> Lluis Ripoll Querol wrote: >>> Hi Len, >>> >>> I'm glad you are fine!, happy new year and I hope continue seeing your >>> pictures, particularly those so nice with your beautiful Summarex!. >>> >>> I've used very few these collapsible lenses on the M8, and I'll keep >>> careful without collapsing. >>> >>> Nice to meet you again on the LUG, >>> >>> Keep wel, >>> Cheers >>> Lluis >>> >>> Lluis Ripoll Querol >>> lluisripollquerol at gmail.com >>> >>> http://gallery.leica-users.org/v/luisrq/ >>> http://photo.net/photos/lluisripoll >>> Blog: >>> http://lluisripollphotography.wordpress.com/ >>> >>> http://www.lrmusic.es >>> >>> El 17/01/2010, a las 1:44, Leonard Taupier escribi?: >>> >>>> Hi Lluis, >>>> >>>> Yes I'm fine. I browse the LUG from time to time and Steve's question >>>> caught my eye. Yes the Summicrons and Elmars are OK. The screw mount >>>> f3.5 Elmars are a little close though. I use them all on my M8s but >>>> keep them extended. >>>> >>>> Len >>>> >>>> >>>> On Jan 16, 2010, at 3:08 PM, Lluis Ripoll Querol wrote: >>>> >>>>> Hi Steve, >>>>> >>>>> As far as I know you can collapse Summicrons and Elmar on the M8, >>>>> I've have both but I've never collapsed on..., I'm careful. I >>>>> remember this question was answered longtime ago by an our expert >>>>> friend Leonard Taupier, I hope he is well. >>>>> >>>>> Amiti?s >>>>> Lluis >>>>> >>>>> >>>>> >>>>> El 16/01/2010, a las 19:25, Steve Barbour escribi?: >>>>> >>>>>> Again the current M9 manual warns against using collapsible lenses >>>>>> with the M9, in the collapsed ie non extended mode. >>>>>> >>>>>> >>>>>> I recall a LUGer, with plenty of experience, has said that the 50mm >>>>>> Collapsible Elmars and Summicrons are in fact not a risk to the M8 & >>>>>> M9 even when collapsed.... >>>>>> >>>>>> Is this correct? >>>>>> >>>>>> >>>>>> thanks, >>>>>> >>>>>> Steve >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> 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 >>> >>> >>> _______________________________________________ >>> 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 > >