Your are undoubtedly right, Doug. Rather sad, actually. Moreso, because when I purchased my 20D, I also purchased their 17~80mm= EF-S, IS zoom, because it filled some 'holes', particularly at the wide= end. However, I am appalled at the quality (or lack thereof) of this lens. It's= sharp enough, but at the extreme w/a, barrel distortion is, well, extreme.= Moreover, it has a terrible tendency to flare, even with the lens hood= on. I know that I've been spoiled by using Leica gear all these years...= but for $CAD $1000 this lens is very poor value! I supect that you're right... Canon has good reason to fear Leica lenses in= EOS mounts. Cheers! David. --------- On 26/08/2005 at 8:48 AM Douglas Herr wrote: >David Young <telyt@xxxxxxxxx> wrote: > >> ... I tend to agree with the Luminous Landscape... If Leica were to >> build their lenses in Nikon/Canon mounts, only a very tiny percentage= of >> those owners would ever buy one. But it would probably double Leica's >> lens sales! And lenses (not cameras) are where the money is! > >This topic has been discussed a number of times on several forums. In a >nutshell: > >If you want auto-diaphragm and full-aperture metering, there are two >paths to this: cooperation and reverse-engineering. > >Cooperation won't happen, period. Canon doesn't want the competition. >The interest in using Leica-R lenses isn't minescule. Go to the Fred >Miranda forum and see how much discussion there is on the subject. > >Reverse-engineering is risky, because Canon can (and has) made minor >firmware tweaks that "break" the compatability of third-party lenses. As >a lens purchaser you might be willing to take that risk if the lens offers >you a significant discount but are you willing to bet the price of a Leica >lens that it won't be turned into a doorstop? I don't see a market here. > >Foregoing the auto-diaphragm and full-aperture metering would be using the >Leica lens in full manual mode, exactly like using an R-mount lens with an >R-to-EOS adapter. A manual-only lens in an EOS mount would lose the >flexibility of using it on a Leica-R body. I don't see a market there >either. > >Ditto for Nikon mount, with the possible exception of an AIS mount, except >that many current Nikon bodies treat AIS lenses as though they're >manual-only. Can't even use the camera's meter. > > >Doug Herr David Young, Logan Lake, BC CANADA. Personal Web-site at: http://www3.telus.net/~telyt Leica Reflex Forum web-page: http://www3.telus.net/~telyt/lrflex.htm ------ Unsubscribe or change to/from Digest Mode at: http://www3.telus.net/~telyt/lrflex.htm Archives are at: www.freelists.org/archives/leicareflex/