Archived posting to the Leica Users Group, 2008/06/14
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Anastigmats? Alastair Firkin wrote: > Correction lens? > > --- mark@rabinergroup.com wrote: > > From: Mark Rabiner <mark@rabinergroup.com> > To: Leica Users Group <lug@leica-users.org> > Subject: Re: [Leica] M8 and the WAR > Date: Sat, 14 Jun 2008 00:04:30 -0400 > > Well you're not supposed to call those close up filters filters. > You're supposed to call thems something else. > I forgot what. > Dioptors maybe. > > > > mark@rabinergroup.com > Mark William Rabiner > > > > >> From: Henning Wulff <henningw@archiphoto.com> >> Reply-To: Leica Users Group <lug@leica-users.org> >> Date: Fri, 13 Jun 2008 19:58:56 -0700 >> To: Leica Users Group <lug@leica-users.org> >> Subject: Re: [Leica] M8 and the WAR >> >> >>> The kind of really smart and cool stuff we expect from Rollei usually. >>> But I feel like to be correct we should not be referring to it as a >>> "filter". >>> >>> >>> >>> mark@rabinergroup.com >>> Mark William Rabiner >>> >>> >>> >> It's a filter. But it only works with one kind of film. That's why >> it's not such a smart idea. What works with Maco 820 doesn't work >> with HIE, or equivalent emulsions. >> >> >> >> >>>> From: Henning Wulff <henningw@archiphoto.com> >>>> Reply-To: Leica Users Group <lug@leica-users.org> >>>> Date: Fri, 13 Jun 2008 15:54:18 -0700 >>>> To: Leica Users Group <lug@leica-users.org> >>>> Subject: Re: [Leica] M8 and the WAR >>>> >>>> >>>>> Jim und David, >>>>> >>>>> Let it be Known that the Rolleiflex Infra-Red filters have a "lens >>>>> correction" >>>>> built into them to compensate for IR focus shift. >>>>> >>>>> BTW, I have a Leica E-39 size IR filter available, should anyone want >>>>> it. >>>>> >>>>> Jerry >>>>> >>>>> >>>> >>>> >>>> That's interesting. >>>> >>>> I assume it's a slight diopter ground into the filter, to compensate >>>> for some specific IR wavelength (which any specific film may or may >>>> not be sensitive to). >>>> >>>> >>>> -- >>>> * Henning J. Wulff >>>> >> -- >> * Henning J. Wulff >> /|\ Wulff Photography & Design >> /###\ mailto:henningw@archiphoto.com >> |[ ]| http://www.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 > >