lol, yes - i know and use that control - when i wrote that it was about 2am in sydney and the expression f-stop was not ringing any bells whatsoever - my apologise (yes i have read the *&*cking manual lol)

You would want one of the adaptors that doesn't use ground glass but rather just let the lens project straight onto the sensor. There was one posted around here a while back, lemme see if I can dig it up...

EDIT: Aha, here it is:

http://dvinfo.net/conf/showthread.php?t=88195

Bear in mind you would have to find some manual focus/iris lenses because electronic coupling will not work anymore. Canon's EF lenses are right out.