Archived posting to the Leica Users Group, 1999/03/28
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Lucien, As a matter of fact, ALL autofocus bodies provide focus confirmation with compatible mount, manual, electronics free lenses (most Nikons and all Pentax show complete backward compatibility in that respect). AFAIK, you will also get focus confirmation with a Leica R or a M42 lens mounted on an EOS body. There is no need for electronics in lenses for focus assistance applications: the sensors are in the body and they telemeter points as they will appear on the film plane. Electronics come in handy for sophisticated TTL flash management, and, depending on the supplier's architecture, reliable, non-mechanical, interactive management of the iris. Alan On dimanche 28 mars 1999 0:14, Lucien [SMTP:lucien@ubi.edu] wrote: > Pascal wrote: > > > Jeez, what are they waiting for re electronic focus confirmation that could > > be done with a simple upgrade to existing R8 bodies, since the ROM lenses > > already have all the necessary electronic functions? It would also give > > extra "upgrade" revenue for Leica. > In don't see why they will need ROM lens for that. > The Nikon F5 or the Contax RX (?) offer that possibility > with old lenses without any electronic inside. > IMO it will work with the previous lenses without ROM also.