OLYMPUS OM / CANON EOS

You can't find it elsewhere !!! To put Olympus OM on analogical and numerical Canon EOS. The AF does not function any more the development is manual. One loses the automatic preselection of dia (the diaphragm functions manually) the photographic exposure meter functions with all the all numerical cases (300D, 350D, 10D, 20D....) I specify that it ??? The ring new manufactured with hardened aluminium and is anodized in black. I have also rings to assemble on the EOS the objectives: Nikon, Pentax K, Yashica/Contax, Leitz and M-42