Canon FD Speed Booster will not work on your E-M1 :(
Speedbooster does not work on EM1
Metabones informs that the Canon FD Speed Booster will NOT work on the E-M1. On the video on top Robert Shaw shared some more tidbits about why it doesn’t work. Pity :(
E-M1 Store Links:
Olympus E-M1 body at Amazon, Adorama and BHphoto, Amazon DE (via DL), Amazon UK (via DL), Amazon ES (via DL), WexUK, Topshot FI, CameraWorldUK.
Olympus M. Zuiko Digital ED 12-40mm f/2.8 PRO Lens at Amazon, Adorama, BHphoto, AmazonDE (viaDL), Amazon ES (via DL).
Olympus E-M1 with 12-40mm Lens kit at Amazon DE (via DL), WexUK and CameraWorldUK, Amazon UK (via DL), Amazon ES (via DL).
Olympus E-M1 with 12-50mm Lens kit at Amazon DE (via DL), WexUK, CameraWorldUK, Amazon UK (via DL), Amazon ES (via DL).
Olympus EP-13 Eyecup for E-M1 at Adorama and BHphoto.
Olympus HLD-7 Battery Grip for E-M1 at Amazon, Adorama and BHphoto.
Olympus LC-62D Metal Front Lens Cap for 12-40mm at Adorama and BHphoto.
Olympus LH-66 Lens Hood for 12-40mm at Adorama and BHphoto.