I have read complaints about not having EC using auto ISO in a manual mode and I usually considered it a silly argument, probably because of my age and being a film user for three fourths (plus) of my life. Reading this discussion has changed my attitude. Although I am primarily a TV man (and have been since my Canon F-1), I can really see using manual mode with auto ISO if EC were available much of the time. But the EC would have to be easy to set, a wheel or rocker arm would seem to be best but there isn't really enough real estate for another wheel on most bodies. Solve that problem and I think it is a good idea I would like to see implemented. How does the 1DX do it?