Pretty cool adaptor.Red Rock Micro has released an adaptor for your Micro 4/3 mount camera. The adaptor allows for aperture control on all Canon EF mount lenses.
…..The Redrock Micro LiveLens mft is the solution for using sharp EF-mount lenses on Micro Four Third bodies without sacrifice. Where standard Ã¢â‚¬Å“dummy adaptersÃ¢â‚¬Â just physically mount EF lenses to the Micro Four Third body, the Redrock micro LiveLens MFT talks to the lens, giving you the ability to adjust your aperture without the need to use time consuming workarounds on set. DonÃ¢â‚¬â„¢t work around the ability of your lenses; make your lenses work for you, starting today.
Red Rock Micro
There has been a lens adapter with built-in aperture for quite a while now. It does not control the lens aperture, but does allow you to control the light.http://www.dl-kipon.com/en/articledetail.asp?id=30