Archived posting to the Leica Users Group, 2008/05/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]will try to oblige with new pics. nothing depresses me more than posted "focus test" pictures of rulers, newsprint, pencils tips and tree tops! An eyelash or two.. now there is some hope. Worst yet: pictures of mannequin heads with Macbeth charts beneath ! I am sure we all have quite a few tucked away on our hard drives somewhere.. Eric On 5/3/08, editor@frontenachouse.com <editor@frontenachouse.com> wrote: > Would love to see some f1 images. D.Scollard > ----- Original Message ----- From: "Eric Korenman" <faneuil@gmail.com> > To: "Leica Users Group" <lug@leica-users.org> > Sent: Saturday, May 03, 2008 9:28 AM > Subject: [Leica] Update: My Noctilux back from world travels. Looks tan > andhappy! > > > > > My noctilux just got back from Germany. > > It now has a spiffy 6 bit code ring to prove it. > > > > results: Absolutely spot-on focus at f 1.0 on my M8 > > higher apertures still result in drifting back focus (but I didn't > > expect them to regrind the lenses..) > > > > so I am happy. > > Whatever they did (likely the shimming by the 6 bit code ring) helped. > > No more hex key monkeying with the M8's cam for me. > > > > Eric > > > > On Sun, Apr 20, 2008 at 10:58 AM, Eric Korenman <faneuil@gmail.com> > > wrote: > > > > > My noct is coming back from Germany this week. Wish me luck. > > > Leica claimed that adding the 6 bit coding ring would 'shim' it > > > slightly and improve focusing with my m8. > > > > > > here's to sharp eyes and soft ears, > > > Eric > > > > > > > > > > > > On Sun, Apr 20, 2008 at 10:31 AM, Leonard Taupier <len-1@comcast.net> > wrote: > > > > Hi Steve, > > > > > > > > Don didn't ask for my M8, just the lenses. He still has them and I > would > > > > expect for awhile as he's pretty busy. Others on the Camera forum > have done > > > > the same thing and report very good results. > > > > > > > > Len > > > > > > > > > > > > > > > > > > > > On Apr 20, 2008, at 10:15 AM, Steve Barbour wrote: > > > > > > > > > > > > > > > > > > On Apr 20, 2008, at 6:46 AM, Leonard Taupier wrote: > > > > > > > > > > > > > > > > This is a very interesting issue. I don't know if anybody has > mentioned > > > > what happens to the depth of field of the Noctilux, or any other > lens, in a > > > > Leica film camera versus the M8 digital camera. It seems that nobody > > > > complains about the focus on a film body but all kinds of complaints > on the > > > > M8, especially the Noctilux, Summilux Asph and the 75mm Summilux. Is > there a > > > > difference? Yup, there sure is. I tested 16 leica lenses for depth > > > of > field > > > > at a distance of 8 feet. I tested 13 of the lenses with film using a > .85 MP > > > > and compared the results to those taken with an M8 and a 1.25 Leica > > > > magnifier. > > > > > > > > > > > > In every case the DOF shifts away from the camera with the M8. > > > In > other > > > > words the lens appears to back focus. The worse lens for this shift > is the > > > > Noctilux. But even on a film camera it is barely in focus. The > typical back > > > > focus shift of any 50mm Leica lens is about 4 to 5 inches at 8 feet > with the > > > > M8. The backward shift of the Noctilux is between 8 and 9 inches. > This puts > > > > the focused point of the rangefinder outside the depth of field of > the lens. > > > > The other thing I noticed is the DOF is better centered on the older > LTM > > > > lenses then on the newer lenses. I don't know if this is a quality > control > > > > problem now or if the focus point test has changed. I tested 7 LTM > lenses, > > > > the Xenon, Summarit, Summitar, Summicron Coll, 50 Elmar RS, 90 Elmar > and 135 > > > > Hektor. The focus point nicely stayed within the DOF on both > > > cameras. > Of the > > > > M lenses the best is the 1st 50mm Summicron rigid version followed > > > by > the > > > > current 50mm Summicron. > > > > > > > > > > > > I verified my results with a second M8. The MP body is one year > old and > > > > purchased new. I also sent my Noctilux and 75mm Summilux to DAG for > focus > > > > adjustment even though the lens is still in warranty. I'm also > shooting more > > > > with film these days. > > > > > > > > > > > > > > > > hi Len, > > > > > > > > > > is it appropriate to send a Noctilux to DAG for focus adjustment, > without > > > > the body... > > > > > > > > > > does that work out OK? > > > > > > > > > > I agree that with film (bodies) I did fine with the Noctilux wide > open, > > > > with the M8 much less so... > > > > > > > > > > Steve > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Len > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > Leica Users Group. > > > > > > See http://leica-users.org/mailman/listinfo/lug > for more information > > > > > > > > > > > > > > > > best, Steve > > > > > > > > > > > > > > > "I never wanted to be famous" > > > > > http://www.blurb.com/bookstore/detail/186890 > > > > > > > > > > > > > > > _______________________________________________ > > > > > 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 >