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  1. Collapse Details
    Which EF to M43 adaptor works on GH5 - Active,Smart,Dumb,Focal Reducer,Speed Booster?
    Senior Member
    Join Date
    Jan 2014
    I have some Canon lenses that I want to use on the Panasonic GH5 camera but there seems to be some mixed information online on which EF to M43 adaptors work properly.
    So I would like to know for those who have used, tried or tested them, which one works for the GH5 camera or partially works and what are the issues or work around.
    I am open to the following types, though for now, budget is a concern so I will start low until getting a more top notch one in the future.
    • Active, Smart
    • Dumb, Passive
    • Focal Reducer, Speed Booster
    • Known and unknown brands
    If you can provide links to the actual device, would be great.


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  2. Collapse Details
    Senior Member Bern Caughey's Avatar
    Join Date
    Jun 2007
    Los Angeles
    Metabones updated their firmware so my somewhat older SpeedBooster Ultra seems to work fine with my GH5, & EF lenses, though I haven't tested all of the optics yet.

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