Archived posting to the Leica Users Group, 2001/06/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Your post is why I love these groups so much....so much info in such a short amount of time. Thank you, thank you. May I be specific and ask if the 60mm macro lens will sync and meter with the Leica R6 (not the 6.2) body? Would I have to be cautios to have a certain specific model year for them to work together? The lens is in one shop and the body in another....... I appreciate your help and info. Lea Doug Herr wrote: > On Mon, 25 June 2001, lea wrote: > > > > > What are "cams" relative to the R system, what do they do, why are they > > important and does their presence or lack thereof mean certain lenses > > can't be used with certain bodies? > > > > Do cams only show up in the R system? > > > > -- > > Lea Murphy > > Whiny Dog Press > > 816-333-9111 > > > > Lea, > > The cams are the lens' communication with an R body's metering system. For the most part a lack of a cam meant the body will not meter correctly with the lens. One of the major exceptions is any ROM lens cannot be used on any Leicaflex body: > > ) a 1-cam lens is for the original Leicaflex > > ) 2-cam is for Leicaflex, Leicaflex SL and Leicaflex SL2 with a couple of exceptions, explained below. > > ) 3-cam lenses works on any Leica reflex body, Leicaflex or R, with the exceptions explained below. > > ) 3rd-cam lenses have only the R-series meter cam and will meter only on these bodies, but may fit on a Leicaflex. (same exceptions, below). Some people don't know the distinction between 3rd-cam and 3-cam. A 3rd-cam lens lacks the metering cams for Leicaflexes. > > 4) ROM lenses are for R bodies only. They have the 3rd cam and also an electronic contact strip that is used for some of the R8's functions. > > The exceptions: some lenses, for example the 24mm Elmarit-R, the 16mm Fisheye, and the old 80-200 f.4.5 Vario, require more clearance between the mirror and the back of the lens than a Leicaflex or Leicaflex SL has. If not a ROM lens, these can be used on a Leicaflex SL2 but not on the earlier Leicaflexes. > > HTH > > Doug Herr > Birdman of Sacramento > http://www.wildlightphoto.com > ___________________________________________________ > The ALL NEW CS2000 from CompuServe > Better! Faster! More Powerful! > 250 FREE hours! Sign-on Now! > http://www.compuserve.com/trycsrv/cs2000/webmail/ - -- Lea Murphy Whiny Dog Press 816-333-9111 Home: http://www.whinydogpress.com Newest: http://www.whinydogpress.com/new.html