It is better to get the Nikon version than the Canon lens to --> M43? I am still haven't purchased Nikon/Canon versioned lens yet. I know the Nikon to M43 metabones speedbooster is $100+- cheaper than the Canon version.
So the real question is should you invest in a F/G mount lens kit or EF mount kit?
Pros and Cons
F mount pros:
plenty of affordable, high quality vintage manual focus primes to choose from on the 2nd hand market
they may last forever; solid construction before the advent of planned obsolesence in manufacturing
Aperture control ring is on the lens!
generally much smaller than EF equivalent as there are no motors/ stabilisers/ cine casing etc
eg. 28mmf2, 35mmf1.4, 50mmf1.4, 85mmf2, 135mmf2.8 are all only 52mm filter size.
F mount can be used on any system with the correct adapter
F mount cons:
nobody making cine lenses with F mount
reversed focus direction from other brands
not intended as a cine kit, so expect some variation in color/contrast from lens to lens
older F mount zooms are not as fast as modern G/ EF zooms
EF pros:
One word: SAMYANG! (Cine Kit)Cheap and good!
But if you buy AF lenses, you can get AF and even remote control focusing with Aputure DEC (M43version)
Holy Manta and Fotodiox makes ND throttles for EF to M43 but not F mount to M43
Sigma and Tamron will continue to make new faster, cheaper AF lenses for EF (eg 18-35mm f1.8)
Generally EF-to-M43 accessories are released before G to M43 accessories if at all.
EF cons:
Heavier, longer than F mount equivalent
manual focusing ring on AF lenses not as steady and "grippy" as nikon AI/AIS manual lenses
But finally, here's the irony:
F mount lenses can be used on Canon bodies but EF lenses won't focus to infinity when used on Nikon bodies.
