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Metabones adaptor appears not to work.

Paintman Avatar
Paintman 17 1.5k 180 United Kingdom
4 Sep 2021 3:35PM
I have just bought a Metabones Speedbooster for Canon EF lenses to fit onto an Olympus OM-D E-M1 mark II camera. The problem is when I connect them together and switch the camera on all I get is a dark screen with some info on it, but I can't take a photo and I can't change the aperture. If I take the lens off and just have the Speedbooster on I can see a very blurred view through the EVF. I can take photos like this, but they are of no use as they are so OOF. The lens cap is off so this is not the problem.

The lens I'm using is a Canon 135mm f2 L, which is a compatible lens according to the Metabones website. I have tried connecting the adaptor to the lens then to the camera and the adaptor to the camera then the lens but neither works. There appears to be no other buttons or levers that would help connect the camera, adaptor and lens together so they work as expected.

Is there something I'm doing wrong when connecting the camera to the adaptor? The adaptor seems to work when there isn't a lens on, which is a waste of time. The seller said the adaptor works perfectly and I've just updated the firmware to the lastest iteration. I just can't get the three pieces to talk to each other.

Any suggestions welcome.

ChrisRPhoto Avatar
ChrisRPhoto 9 109 United Kingdom
5 Sep 2021 7:37PM
May not help, but there are two versions of the EF to m43 speed booster adapter, so worth checking which one you have. I think that it needs to be the Speedbooster S to work with the OM-D cameras as they have an active mount. The non S version is for some blackmagic cameras that have a passive mount, so doesn’t have all the electronic contacts to work with most m43 cameras. There’s more info on the metabones website.
Paintman Avatar
Paintman 17 1.5k 180 United Kingdom
6 Sep 2021 10:16AM
Hi Chris, I think it is the correct one as it has the contacts on both sides and they have the same numbers as the camera and the lens. I did check the metabones website and it should be the right adaptor.
ChrisRPhoto Avatar
ChrisRPhoto 9 109 United Kingdom
6 Sep 2021 10:49AM
Hi, not sure what else it could be, but it sounds like the lens isn't 'talking' to the adapter and the aperture is at its smallest setting constantly. - here's the page with the comparison between the normal and the S versions (about half-way down the page there are pictures and ID)


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