NIKON / CANON EOS

To put a Nikon objective on analogical and numerical Canon EOS.  All the Nikon objectives except G (without ring of diaphragm) 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 numerical cases (300D, 350D, 10D, 20D....)  I specify that the photographic exposure meter does not function on Nikon D70 and D100 with the Nikon objectives Ai and AiS !  The ring is new, manufactured with hardened aluminium and is anodized in black.  I have also rings to assemble on the EOS the objectives:  1 Yashica/Contax, Leitz, Olympus OM, Pentax K and M-42.