Archived posting to the Leica Users Group, 2006/02/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Larry, send an e-mail also to CameraQuest. Steve Grady wil surely give you a clear answer. Short and to-the-point. B. On 27-feb-2006, at 4:24, lrzeitlin@optonline.net wrote: > > OK, I asked if the 4/3 lens mount was similar to that on the > Olympus Pen F. While I have not been able to come up with a > definitive answer, half an hour surfing Google came up with the > following: > > 1. The 4/3 mount surely looks like the Pen F mount, at least > judging from the pictures of the adapters offered by Cameraquest > and others. Without exact dimensions, however, I cannot be sure. > > 2. The 4/3 system is covered by US Patent 6,910,814 issued June 28, > 2005. The actual patent covers the camera and 4/3 standard. > Unfortunately I was not able to download the drawings with the > relevant mount specifications on my laptop browser (IE 5.1). I'll > try again tomorrow with Safari. If anyone has access to the patent > literature, they may be able to get the actual drawings. > > 3. The flange to sensor distance of the 4/3 system is 38.67 mm. The > distance for the Oly Pen is 28.95 mm. That for the Olympus OM > series is 46.0 mm. And of course the distance for the Leica M is > 27.8 mm and the Leica s > crew is 28.8 mm. This means that an adapter can be constructed for > the 4/3 system for any lens with a flange to film distance od 40 mm > or greater. This includes the OM series lenses and most others > built for full frame SLR cameras but obviously not the Leica or Pen > lenses. So all of us who fantasized about using our Leica RF lenses > on a 4/3 system, whether made by Olympus, Panasonic, Fuji, Kodak, > or Leica, are out of luck. > > Larry Z > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information