Archived posting to the Leica Users Group, 2002/04/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hi The camera learns through the contacts what focal length, aperture and focus position is being used. The contacts also control the position of the focused element and aperture. I've been inside a few EF zooms and have seen slider RVs on the focus ring aperture and zoom though the latter is stepped rather than CV I think. These settings are reported to the camera as is the M/AF setting on the lens. Anyway by finding out how this pinout works I would like to be able to tell the camera to go ahead and allow focus confirmation, and perhaps tell it the focal length if necessary. The reason I asked if the EOS adapter had contacts is merely because I wanted to confirm that it was a purely dumb adapter. A contact set on the adapter even if connected to nothing on the lens would still indicate that termination or perhaps loopback with or without impedence is present. Since the contacts are not present it indicates that Novoflex adapter does not the camera at all. The camera believes no lens is attached and that is why focus confirmation doesn't work. Javier - --- Joseph Yao <joseph@yao.com> wrote: > on 22/4/02 12:14 pm, Javier Perez at > summarex@yahoo.com wrote: > > > Hi Paul > > Thanks for the info. > > Do these adapters have contacts on them. I'm > trying to > > figure why you can't have focus assist with them. > > Everything I've heard tells me it should be > possible. > > Javier > > Javier, > > Everything I have been telling you the adapter > (Novoflex or not) has no > contacts and the EOS body will not offer focus > confirmation. The camera > also defaults to stopped-down metering mode in auto > unless you switch it to > manual exposure mode. > > Just think - if the adapter had contacts, what would > they be good for? > > Joseph > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html __________________________________________________ Do You Yahoo!? Yahoo! Games - play chess, backgammon, pool and more http://games.yahoo.com/ - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html