Metabones EF-M4/3 Speed Booster Finally Available!

I'd be careful to say any 3rd party APS-C lens will work... an AF100 with SpeedBooster has a crop factor of x1.42. Canon APSC cameras have a crop factor of x1.62. As we saw with Nikon APS lenses (DX crop ~x1.5), some will vignette and some won't, and you really can't tell by simply looking at the focal length... Test before you buy.

Of course, if a person doesn't already have a lot of Canon lenses and doesn't have a Canon body, I'd argue there's no compelling reason to buy Canon system glass for m43.
 
I'd be careful to say any 3rd party APS-C lens will work... an AF100 with SpeedBooster has a crop factor of x1.42. Canon APSC cameras have a crop factor of x1.62. As we saw with Nikon APS lenses (DX crop ~x1.5), some will vignette and some won't, and you really can't tell by simply looking at the focal length... Test before you buy.

Yes, off-course. I did the same thing before buying Sigma 17-50 for the Nikon speedbooster.

Of course, if a person doesn't already have a lot of Canon lenses and doesn't have a Canon body, I'd argue there's no compelling reason to buy Canon system glass for m43.

Well I would really like to have image stabilisation, that's all. I just bought the Lumix 14 -140 just because of this - for event shooting. It's to bad the Nikon adapter isn't powered by the camera body.
 
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