Archived posting to the Leica Users Group, 2008/07/05
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Alastair: Very encouraing news. Many thanks, indeed! Bob On Jul 4, 2008, at 10:26 PM, Alastair Firkin wrote: I have used the 2x on the 70-180 and it works beautifully. Cheers --- rsphotoimages@comcast.net wrote: From: "rsphoto's email" <rsphotoimages@comcast.net> To: Leica Users Group <lug@leica-users.org> Subject: Re: [Leica] WTB: 280 f2.8 apo Date: Fri, 4 Jul 2008 15:34:10 -0700 Doug: Here we go again: Like Allstair, I've been obsessing about the 280 but in my case, I can't remember if either APO Extender will work with the 70-180 APO. Will they? Some say yes, some say no. If yes, what is the Net Focal Length at each end of the 70-180 with the 2x? I don't think it achieves 140-360. Bob Bobwill the On Jul 4, 2008, at 11:02 AM, wildlightphoto@earthlink.net wrote: charlie chan <topoxforddoc@btinternet.com> wrote: > Why not buy the 1.4x APO converter instead? In my tests on the 280mm APO-Telyts (both f/2.8 and f/4) the 1.4x APO- Extender causes a barely perceptible loss of image detail. Generally not enough to notice in real-world circumstances. the 2x APO-Extender will cause a bit more degradation but in most cases not enough to be a problem (and I'm very fussy about image quality). Doug Herr Birdman of Sacramento http://www.wildlightphoto.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