Archived posting to the Leica Users Group, 2002/08/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Tommi, My version operates as you would expect it to -- differently from yours. Wide open (unmounted) means no aperture blades are visible. There is a distinct closure of the aperture from 11 to 13.5 to 16. The problems you mentioned aren't likely to cause major exposure errors, but you should have it serviced as "good enough" is not why we buy Leica. David W. Almy Annapolis - ----- Original Message ----- From: "Tommi Kähärä" <dummy@iki.fi> To: <leica-users@mejac.palo-alto.ca.us> Sent: Friday, August 16, 2002 5:28 PM Subject: [Leica] Summilux-R 50/1,4 question... > I just got this lens, Summilux-R 50/1,4 latest ROM version. Anyone who has > the same lens, latest version, please help me with the following > question. > > Is it really normal for this lens that the diaphragm doesn't open > completely? It looks different than my other lenses which seem to open > completely when set at the largest aperture. > In addition to this, when stopped down, the diaphragm hole seems to remain > same in size between the shift from f:11,5 to f:16. This is also > different when compared to my other lenses where I can see clearly the > difference between the last half stop and the smallest aperture. When > attached to a camera (R8) and aperture ring set at f:1,4, the diaphragm > opens that "half stop" but when I push the DOF lever, it then closes > again. Otherwise the lens works perfectly with a camera and there isn't > any mechanical fault visible. So it appears to me that there is a > systematic error of about half a stop through the aperture setting range. > > The REAL problem is as follows: > Could this be the actual, proper way how this lens works. I have been told > so by two separate local Leica dealers, but it is really hard to believe, > especially when this is also the only summilux-r 50/1,4 (newest version) > they have seen. I really can't find another sample from which I could easily > check if it functions the same way. I would like to know if my lens is > really faulty before I complain about it more (I bought it used but it > has a warranty) since the salesperson thinks the lens is perfecly ok. > > Tommi > > > ___________________________________________________________ > PL 300 FIN-53101 LPR | +358-5-2232198 | http://iki.fi/dummy > > > > > > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html