the adaptor is well made, you can manage all controls, but when it comes to the focus, it is really hell. I used a canon 50mm 1.8 with my lumix s1, well it takes almost 6 to 7 seconds to find focus !!!! It goes far beyond subject, then way in front of it then goes back slowly unti focus with really high noise. I was expecting sigma mc21 to be nicely functional since they used to produce canon lenses, but the reality is shocking, no way to use it for photo. I will keep it to use it for video - but with manual focus.... the price is very high for what is offered by this adaptor. Note that I bought it new...
Verified purchase: Yes | Condition: New
My Sigma (SA) lenses were not readily usable on my non-Sigma cameras. But this unit lets me put the lenses, including the 150-600mm on the L mount cameras, including using their image stabilization. The autofocus is not fast or rock solid, but mostly works.
Verified purchase: Yes | Condition: New
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