Archived posting to the Leica Users Group, 2011/03/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I bought the lens on Ebay because I wanted one of the older ones that was set for f2.8, and the seller told me it was one of those. I tested it after I got it, and the seller told the truth. -- Chris Crawford Fine Art Photography Fort Wayne, Indiana 260-486-2581 http://www.chriscrawfordphoto.com My portfolio http://blog.chriscrawfordphoto.com My latest work! http://www.facebook.com/pages/Christopher-Crawford/48229272798 Become a fan on Facebook On 3/20/11 2:19 AM, "Geoff Hopkinson" <hopsternew at gmail.com> wrote: > Chris may have done some testing for himself, perhaps. > This Compact/Classic Sonnar is reported to to have the focus accuracy > adjusted to work best at f/2.8 rather than wide open. This is meant to > assist with managing focus shift as you stop down. The fast Leica M lenses > are reported to be optimised for wide open and some include floating > elements to reduce the focus shift effect as is known. That is my > experience > with the 35, 50, and 75. > > Cheers > Geoff > > *Life's not black and white, except at both ends* > http://www.pbase.com/hoppyman > > > > On 20 March 2011 16:03, <tedgrant at shaw.ca> wrote: > >> Nathan Wajsman ASKED? >> Subject: Re: [Leica] New portrait of my son added today >> >> >> Nice portrait, but how do you know that a particular lens is optimized >> for >>> a particular aperture?<<<< >>> >> >> Hi Nathan, >> You beat me to the very question? :-) >> >> Hi Chris, >> How was this setting established? What kind of measurement method did you >> use? Or who and how was it determined that f.2.8 was the optimum aperture? >> >> Thanks, >> Dr. ted >> >> >> >> On Mar 19, 2011, at 5:28 PM, Chris Crawford wrote: >>> >>> http://tinyurl.com/mack30811 >>>> >>>> I shot this one a couple weeks ago with the 50mm C-Sonnar. Mine's >>>> optimized >>>> for f2.8, which is the aperture I used. >>>> >>>> >>>> -- >>>> Chris Crawford >>>> Fine Art Photography >>>> Fort Wayne, Indiana >>>> 260-486-2581 >>>> >>>> http://www.chriscrawfordphoto.com My portfolio >>>> >>>> http://blog.chriscrawfordphoto.com My latest work! >>>> >>>> http://www.facebook.com/pages/Christopher-Crawford/48229272798 >>>> Become a fan on Facebook >>>> >>>> >>>> >>>> _______________________________________________ >>>> 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