Archived posting to the Leica Users Group, 2010/04/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I thoguth you have the SA? Why bother with the CV then? On Sat, Apr 3, 2010 at 12:22 PM, slobodan Dimitrov <s.dimitrov at charter.net>wrote: > The main thing that makes my 21mm C/V loiter in the camera bag, is that it > has a look reminiscent of 60-70's Nikon glass. It's a bit brittle in the > mid > range. > Can the lens be re-centered aftermarket? > S.d. > > > On Apr 3, 2010, at 10:52 AM, Henning Wulff wrote: > > > Some years ago I did a comparison for the LHSA Viewfinder of four 21mm > lenses: the CV 21/4, Ricoh 21/3.5, SA f/3.4 and Elmarit ASPH f/2.8. I used > to have the older Elmarit, and had compared that lens to the ASPH and SA > separately, indicating that that lens would have ended up in last place. > Some other 21's such as the Kobalux lenses also would not have touched the > ASPH, but some samples were quite good. > > > > The Ricoh was the poorest in most respects, but not by a large margin, > and the ASPH was definitely the best in most respects. The SA and CV lenses > each had strong points and weak points, but both were very useable. Since > then I've tried a number of newer lenses like the Zeiss 21's, both of which > can compete very well with the Elmarit ASPH and are definitely better than > the CV 21. But again, they're larger, and the Biogon is even slower. > > > > The main problem I've seen with the CV is decentering, which > unfortunately affects many other CV products. A lot of samples need some > stopping down to bring some corners into good performance. That's were a > lot > of the money goes with Leica lenses. > > > > In comparison to the 15 and 12mm lenses, I find that the 21 a) has a lot > of competition, which the others don't, and b) there's not a lot of > difference in performance, and certainly the 21 and 15 have a quite similar > character. > > > > As for Ken Rockwell's 'tests' and 'opinions', the less said the better. > > > > > > > > At 1:42 AM -0400 4/3/10, Mark Rabiner wrote: > >>> Rabs, I said "BY ALL REPORTS" competitive since I have no idea whether > it's > >>> competitive or not; just telling you about the *reviews* out there. > Gandy > >>> for one but ok he has an interest in the matter. But -- since you've > already > >>> mentioned the technically knowledgeable though aesthetically wanting, > often > >>> goofy, and I suspect on other fronts dumbass closet right wing, Ken > Rockwell > >>> , I offer first this: > >>> > >>> *<<This Voigtl?nder 21mm lens is the best 21mm lens ever made for Leica > >>> cameras, regardless of price....This lens is tiny, and works at least > as > >>> well optically as anything ever sold by Leica.....It is as sharp, and > >>> sometimes sharper, than the $4,300 Leica 21mm f/2.8 > >>> ASPH<http://www.kenrockwell.com/leica/21mm-f28-asph.htm>to which I > >>> compared it directly. > >>> * > >>> > >>> *How can this be? Probably because this Voigtl?nder lens is only f/4, > which > >>> is far easier to design and manufacture than trying to push things with > the > >>> modern f/2.8 ASPH lens from Leica, which has to be much bigger and much > more > >>> expensive just to retain the same optical quality. It costs a lot in > many > >>> ways to add just one stop of lens speed. * > >> > >> > >> I've been harping on this for years on the lug what you just said. The > >> wonders of slow glass to the effect... > >> Every once in a while Leica gets smart and gives us a slow option. > Instead > >> of listening to the marketing people and making us pay 8 grand for a > huge > >> thing you'd not want to carry around all day and have a filter size > which is > >> the same size as the platters at the Yankee pot roast family restaurant. > >> Traditionally in the Leica catalog you got a slow medium and fast > option > >> for about very focal length. > >> The slow lenes are slow. > >> But will have less flare and result at least as well as not better than > the > >> high priced spread. Compact. > >> So there is a gap which Cosina has filled with the help of the typefaces > & > >> fonts from Voigtl?nder and Zeiss family heirlooms. And the power of > mind > >> over matter on the part of their customers who want with all their might > to > >> think they are buying a Zeiss lens for a few hundred dollars. > >> I do wish I had some of these options when I was getting my glass in the > >> 90's > >> We keep forgetting that we don't need 1.4 to see thought the darned > thing. > >> It can be a 5.6 our viewfinder rangefinder is just as bright and sharp. > >> For many photographers they don't know it but that is their real speed > >> issue. They just want a bright groundglass. > >> Well we don't need no stinkin groundglass. We can get sharp as tack > >> focusing with an f 11 lens. If anyone ever made one. If the did I'd buy > it. > >> But I'm been using my twinkie light. > >> > >> [Rabs] > >> Mark William Rabiner > >> > > -- > > > > * Henning J. Wulff > > /|\ Wulff Photography & Design > > /###\ mailto:henningw at 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 > -- // richard <http://www.imagecraft.com/> // icc blog: <http://imagecraft.wordpress.com> // photo blog: <http://www.5pmlight.com> [ For technical support on ImageCraft products, please include all previous replies in your msgs. ]