Archived posting to the Leica Users Group, 2014/02/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Yeah, it's hard getting that English(aus)<=>English(cdn) right! :-) Henning On 2014-02-12, at 1:29 PM, Geoff Hopkinson <hopsternew at gmail.com> wrote: > Yes understood, Henning. Often my light hearted remarks (Adventurous) don't > translate well. ;-) > > > > > Cheers > Geoff > http://www.pbase.com/hoppyman > > > On 13 February 2014 02:57, Henning Wulff <henningw at archiphoto.com> > wrote: > >> Geoff, what I meant with that is that this isn't a matter of opinion, >> maybe or phase of the moon, but a measurable quantity. So measuring is the >> way to do it. >> >> It's always best to extend a collapsible lens before mounting or >> unmounting it, but other than that measuring the rear protrusion vs. the >> depth of the opening to the shutter will always tell you whether or not >> the >> lens will cause problems. Clearly, if you have an M5 the depth of the >> opening is to the metering cell, but otherwise it is to the shutter. >> >> I have measured and ascertained that old 50 Elmars, Summitars, Summars, >> Hektors and Summicrons pose no threat whatsoever, and Super Angulons and >> Hologons are also OK. The recent 50 Elmar is good, and the 90 macro Elmar >> is of course good because a) it was designed for these cameras and b) it >> really doesn't protrude at the back when collapsed. These are facts, based >> on the dimensions of the products. >> >> An easy way to measure: Take a thin strip of paper, and stick it into the >> lens opening parallel to the lens axis into the camera until it touches >> the >> shutter. Mark where the paper touches the lensmount. Then take that strip, >> and touch the end to the lens mount on the lens, and see if the mark you >> have made extends beyond the end of the collapsed lens. Easy, and >> definitive. >> >> Henning >> >> >> >> On 2014-02-10, at 3:47 PM, Geoff Hopkinson <hopsternew at gmail.com> >> wrote: >> >>> That really highlights different thinking or language on the topic I >> guess. >>> Henning isn't happy with my description 'adventurous' ;-) >>> By that I meant, if you are wrong there is just some potential for damage >>> and opinions aren't guarantees! >>> To be pedantic then; if the retracted lens protrusion rearward does not >>> contact the internal chamber or shutter mechanism or cam roller and you >>> always fit and remove the lens while carefully maintaining it >> perpendicular >>> to the opening then there is no potential issue. If the dimensions are >>> close and you are occasionally less than perfect in handling then it is >>> possible to catch on one of those surfaces. >>> Or you can tape or zip-tie the lens extended as Leica recommends and >> avoid >>> any possibility of contacting the interior of your camera body when >> fitting >>> or removing the lens. >>> >>> >>> Cheers >>> Geoff >>> http://www.pbase.com/hoppyman >>> >>> >>> On 11 February 2014 08:51, Steve Barbour <steve.barbour at gmail.com> >> wrote: >>> >>>> >>>> On Feb 10, 2014, at 2:21 PM, Henning Wulff <henningw at archiphoto.com> >>>> wrote: >>>> >>>>> This has nothing to do with 'adventurous'. >>>>> >>>>> Measure it and you will KNOW. >>>>> >>>>> I've shot with the Heliar (Tom Abrahamsson's) on the M8, and don't >>>> recall any problems. >>>> >>>> >>>> no problems with the M8 or M9 but unknown for the M 240....measurements >>>> are very ! close, if they are a tiny bit off you will eat your words... >> so >>>> be extremely careful, my solution, tape and a rubber band, lock the lens >>>> fully extended... >>>> >>>> better safe than sorry >>>> >>>> >>>> s >>>> >>>> >>>> >>>> >>>>> If you give me a couple of days I'll be able to re-check for you, if >> you >>>> wish. I've also mounted and retracted a large variety of collapsible >>>> lenses, except for the old 90 Elmar. I'd measure that one before I >>>> retracted it as it sticks a long way in. >>>>> >>>>> However, the old Super Angulon f/3.4 fits and doesn't interfere with >> the >>>> shutter, and neither does the even more protruding Hologon. I've shot a >> bit >>>> with it on the M240, and while there is rather severe vignetting, that >> is >>>> really the only issue. >>>>> >>>>> Henning >>>>> >>>>> >>>>> >>>>> On 2014-02-10, at 1:24 PM, Geoff Hopkinson <hopsternew at gmail.com> >> wrote: >>>>> >>>>>> Well there's the thing Steve! Has anyone ever tried? Some people >> report >>>>>> carefully retracting collapsible lenses into Leica bodies without >>>> problems. >>>>>> Leica themselves say don't do it (with their own designs). I have >> never >>>>>> seen the lens myself. >>>>>> I guess if you owned one and were feeling adventurous you could try? >>>>>> Personally I would not. You might try asking Stephen Gandy at >>>> Cameraquest? >>>>>> If you don't own one but are considering it for its very compact >>>> properties >>>>>> for carrying, you might look at the little Summarit or the Elmar M 50 >>>>>> (which can be collapsed safely). I think that Lluis still has one for >>>> sale >>>>>> by the way. >>>>>> >>>>>> >>>>>> >>>>>> Cheers >>>>>> Geoff >>>>>> http://www.pbase.com/hoppyman >>>>>> >>>>>> >>>>>> On 11 February 2014 00:27, Steve Barbour <steve.barbour at gmail.com> >>>> wrote: >>>>>> >>>>>>> >>>>>>> >>>>>>> Sent from my iPhone >>>>>>> Steve Barbour >>>>>>> >>>>>>> On Feb 9, 2014, at 11:53 PM, Geoff Hopkinson <hopsternew at >>>>>>> gmail.com> >>>> wrote: >>>>>>> >>>>>>> Camera Quest reported that it could be collapsed safely into the M8 & >>>> M9 >>>>>>> but advised caution. >>>>>>> Isn't this a very rare lens? I had read of a run of 600 world wide. >>>>>>> >>>>>>> Very rare, can I use one safely on the M 240? >>>>>>> >>>>>>> thanks Geoff >>>>>>> >>>>>>> s >>>>>>> >>>>>>> >>>>>>> Cheers >>>>>>> Geoff >>>>>>> http://www.pbase.com/hoppyman >>>>>>> >>>>>>> >>>>>>>> On 10 February 2014 16:46, Steve Barbour <steve.barbour at >>>>>>>> gmail.com> >>>>>>> wrote: >>>>>>>> >>>>>>>> Compatible? Problems? >>>>>>>> >>>>>>>> many thanks, >>>>>>>> >>>>>>>> steve >>>>>>>> >>>>>>>> Sent from my iPhone >>>>>>>> Steve Barbour >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> 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 >>>>>> >>>>> >>>>> >>>>> Henning Wulff >>>>> henningw at archiphoto.com >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> 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 >>> >> >> >> Henning Wulff >> henningw at archiphoto.com >> >> >> >> >> >> _______________________________________________ >> 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 > Henning Wulff henningw at archiphoto.com