Archived posting to the Leica Users Group, 1999/03/29
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]My Nikon F90X provides focus confirmation with manual focus (AI-S) lenses without modification. However, with such set up I find focusing with the ground glass screen difficult - while the view is bright and clear, images do not seem to snap in and out of focus clearly, unlike with most manual focus cameras. Joseph > >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. > > Not quite true. My early Nikon F90X's don't. Nikon wants $100Cdn to allow > focus confirmation with non-AF lenses. There are probably others.