It ' s definitely not on par with Canon mechanical focus lenses . I would even say that STM lenses from Canon are still better than Fuji ' s for predictable focus pulling . It ' s better than the stiff rings in the primes , that ' s for sure . I do appreciate the OIS , it ' s pretty good for video , but I would still say that not as good as Canon . FWIW I still have my T 3 i lenses for video work . Fuji is perfectly ok , but Canon is so much better . If I was buying from scratch I would probably consider a GH 4 , or GH 5 , though because 4 K and more modern software . Another plus for me is that it ' s far easier in my local scene to find friends with Canon lenses or gear you can borrow than friends with Sony or Fuji stuff . But that ' s just my local scene , so take it as a thing to consider instead of a fact .