Archived posting to the Leica Users Group, 2014/03/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks Marty! On 3/12/14 7:11 PM, "Marty Deveney" <benedenia at gmail.com> wrote: > All lenses have some focus shift. If there is enough to move the point of > optimum sharpness away from the point of focus chosen by the rangefinder > more than the depth-of-field, your photos will be soft. Lots of Leica > lenses have this much focus shift, but the 90 AA is not one of them. > > The f1 Noctilux and the 75 Summilux have a lot of focus shift, among > others. > > If you use the 240 and focus using live view it doesn't matter. > > All the M lenses are made to tighter focus specifications and adjusted more > accurately and precisely than they were when they were being made for film > cameras, but there is only one version of the 90 AA. > > Marty > > On Thursday, 13 March 2014, Mark Rabiner <mark at rabinergroup.com> wrote: > >> I thought when the first dig M's came out the M8 and maybe M9 that because >> the sensor is so flat compared to film it brought out focus shift to an >> unacceptable level which was ok on curved film before. That's how I >> absorbed >> it at least. Has that been disproven? >> Anyways I do have the lens. It cost me a bundle. And is it a reason for me >> to try to get a new M? They upgraded the lens I think and are calling it >> something else. >> >> >> On 3/12/14 4:57 AM, "Marty Deveney" <benedenia at gmail.com >> <javascript:;>> >> wrote: >> >>> Focus shift is a property of lenses, not cameras. The 90 AA >>> has little focus shift but when using the rf the cam on many >>> lenses does not follow the focus properly. Lenses that focus accurately >> at >>> infinity can be off at 10m and then on again at 3m all at the same >>> aperture. Henning described it here: >>> http://leica-users.org/v49/msg10637.html. I mistook it for focus shift >> when >>> I first got my M8. >>> >>> Marty >>> >>> >>> >>> >>> >>> >>> >>> On Wednesday, 12 March 2014, Mark Rabiner >>> <mark at rabinergroup.com<javascript:;>> >> wrote: >>> >>>> Are the older LEICA APO-Summicron-M 90mm f/2 ASPH - still focus >> shifting on >>>> the latest Leica M's? >>>> >>>> >>>> On 3/11/14 10:47 PM, "Geoff Hopkinson" <hopsternew at >>>> gmail.com<javascript:;> >> <javascript:;>> >>>> wrote: >>>> >>>>> The new 35 is designed to reduce the focus shift inherent in the older >>>>> design. I do like it a lot. The 50 Summilux of course predates the M >> (Typ >>>>> 240) considerably. Both work really well on my camera. Focus system in >>>> the >>>>> new camera is refined further too.. Personally I wouldn't replace the >>>>> Elmarit M 90 with the Summarit. It is a great performer already. >>>>> >>>>> >>>>> Cheers >>>>> Geoff >>>>> http://www.pbase.com/hoppyman >>>>> >>>>> >>>>> On 12 March 2014 12:43, Jim Laurel (gmail) >>>>> <jplaurel at gmail.com <javascript:;><javascript:;>> >>>> wrote: >>>>> >>>>>> It's almost as if Leica has upped their quality control game now that >>>> the >>>>>> M240 sensor is so demanding and there are so many pixel peepers. >>>>>> >>>>>> The only thing I don't really like about the new Summarit 90 is the >> lens >>>>>> hood, which is an extra expense, but even more problematic is that it >>>> is a >>>>>> screw-on instead of the handy slide-out one that came on the Elmarit >> 90. >>>>>> >>>>>> --Jim >>>>>> >>>>>> >>>>>> On Mar 11, 2014, at 7:43 PM, John McMaster >>>>>> <john at mcmaster.co.nz <javascript:;><javascript:;>> >>>> wrote: >>>>>> >>>>>>> I would say different, I tend to have old and new in my most used >>>> lenses >>>>>> for different looks... >>>>>>> >>>>>>> john >>>>>>> ________________________________________ >>>>>>> >>>>>>> I went to the trouble of having my old Leica lenses coded, but have >>>> also >>>>>> picked up a few new ones, including the floating element 35mm Summilux >>>>>> ASPH, the 50mm Summilux ASPH and, most recently, the 18mm Super >> Elmar. I >>>>>> think I'm going to sell all my old ones from the 80s and 90s. These >>>> three >>>>>> latest issues on the M240 are just fantastic. For some reason, I'm >> just >>>>>> missing focus less often with the 35 and 50 than my old 35 Summilux >> ASPH >>>>>> and Summicron 50. >>>>>>> >>>>>>> The only one I'm thinking of replacing next is the 90mm Elmarit with >>>> the >>>>>> new 90mm Summarit. But the Elmarit has served me so well for almost 20 >>>>>> years that I wonder what more the Summarit might have to offer. >>>>>>> >>>>>>> --Jim >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> 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 >>>> >>>> >>>> >>>> >>>> -- >>>> Mark William Rabiner >>>> Photographer >>>> http://gallery.leica-users.org/v/lugalrabs/ >>>> >>>> >>>> >>>> _______________________________________________ >>>> 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 >> >> >> >> >> -- >> Mark William Rabiner >> Photographer >> http://gallery.leica-users.org/v/lugalrabs/ >> >> >> >> _______________________________________________ >> 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 -- Mark William Rabiner Photographer http://gallery.leica-users.org/v/lugalrabs/