error 01

Hi, My 1st post. :) I have two camera bodies and a few newer lenses. I also have many older Canon and Sigma lenses that worked on older bodies. If I attach these older lenses I get an error message. I have been told the lens need to be re-chipped. Canon does not do this anymore but I heard...

Im experimenting with a setup using t-mount lenses on Canon EOS bodies. I've added a an Kenko/EOS x2 convertor into the mix - optically it's giving the results I want, however since the convertor is compatible with modern lenses I get the Error 01 as the electronic contacts on the convertor have...