Archived posting to the Leica Users Group, 1998/04/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Pascal, Thanks for the information. I wouldn't doubt but that Leica's motivation= is the same as with the molded aspheric lenses....cost reduction. Eliminati= ng cams on future lenses would save a lot of money. Bud - -----Original Message----- From: Pascal <cyberdog@ibm.net> To: Leica Users Group <leica-users@mejac.palo-alto.ca.us> Date: Sunday, April 12, 1998 2:35 PM Subject: Re: [Leica] 3-Cam vs. ROM On 08-04-1998 16:08 Bud Cook wrote: >All my lenses are 3-cam lenses. Would these lenses work on the R8? Wha= t >functions of the R8 are lost without having a lens with built-in ROM? > >Do ROM lenses also have the 3-cams necessary for earlier R bodies? > Bud, Sorry for the late answer. Here it goes. Brian Bower in his book "Leica reflex photography" (new edition 1997) says that at this stage the contact strip provides information for dedicated flashguns and also to enable more precise stopping down of lenses when the camera is in automatic shutter speed priority or program operating modes. The manual of my R8 confirms this (on page 7 of the Dutch language version): "Not only a mechanical but also an electronic exposure control takes place when using lenses with contact strip, and certain lens data such as the lens' focal length, are passed on to the camera." The contact strips provide for an additional (electronic) control, e.g. compensation for light fall-of in the corners. The thing is, the actual use and potential future of the contact strip remains somewhat in the dark. Even Leica Solms will apparently not comment much on the matter. Is there another version of the R8 in the offing (with electronic focussing aids for which the contact strip is of course essential), or even the R9 (autofocus =E0 la Contax AX)? Only futu= re will tell us. Pascal - -------------------------------------------------------- t h i n k d i f f e r e n t a p p l e c o m p u t e r - -------------------------------------------------------- <<< PGP public key available on request >>>