Just got a GH3, and a voigtlander 17.5mm  (30mm equiv) great combo, but I have several sigma EF lenses (including the 18-35) I would love to use for tighter shots 
  
ANY word on the speedbooster for canon EF?  I can't find updated information on anything, mostly stuff dated by in August. 
  
I contacted them a few weeks back again, all they said was "pls wait" "we are working on this". 
  
I even tried to contact their "partner"Caldwell Photographic, who develops the optics on the speedboosters - with no response as of yet. 
  
Does anyone have any insight? Thanks 
  
(first time entry, long time lurker)