Archived posting to the Leica Users Group, 2007/03/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]John, I agree that the lens performance at infinity is not changed by the adjustment. However, it is possible that the rangefinder's coincident image may not agree absolutely with the lens distance scale at infinity. Is this not correct? Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "John Collier" <jbcollier@shaw.ca> To: "Leica Users Group" <lug@leica-users.org> Sent: Monday, March 19, 2007 9:22 PM Subject: Re: [Leica] IMG: Focus, Noctilux, M8, C Mode & Scotch > Adjusting the rangefinder does not change the lens's performance at > infinity the slightest smidgeon. The rangefinder's superimposed image may > not line up but that won't show in the photos. > > John Collier > > On 19-Mar-07, at 5:32 PM, Robert Rose wrote: > >> Can't be sure yet that other lenses are unaffected. I added two near >> focus >> images to the gallery to show that the Noctilux is in tip top shape now: >> >> http://gallery.leica-users.org/v/rjrose/focus/ >> >> I will add an infinity photo when the haze clears and I can see some >> mountains! >> >> Here is why I am not sure about the other lenses yet. I think that near >> focus issues are attenuated due to focal length or aperture on my TE >> (f/4), >> 90 Elmarit (f/2.8), 135 Apo-Telyt (F/3.4), 28 Summicron-M (f/2 but wide >> angle). They all seem okay at both near and infinity. >> >> I am suspicious about the 50 Summicron at near focus, but I need to do >> some >> checking on that lens, and I ran out of time. Sorry. >> >> >> From: Jim Nichols >> >> Do I understand correctly that the very small cam adjustment that you >> made >> corrected the Noctilux problems without spoiling the adjustment for >> other >> lenses? > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >