Dustin has completed the Canon Rumors review of the Samyang (Rokinon) 50mm f/1.2 AS UMC for EF-M. This is another in the series of fast primes for EF-M that only Samyang seems to be deveoping currently, though we do expect Canon to answer this need in the near future.
Every new gear choice is an evaluation of the compromises implicit with the gear versus the potential benefits. In the case of the Rokinon 50mm f/1.2 AS UMC lens the benefit is nicely compact, well-built lens in a variety of native mirrorless mounts that offers up excellent, even class leading optical performance. The tradeoff is that this is a manual everything lens with no electronic communication to the camera body. For some that is the ultimate deal breaker, and some of you will inevitable comment “no AF = no buy”, but for some of you that aren’t put off by the premise of these lenses you will find the reality of them to be very enjoyable. Read the full review
If you're in need of some fast primes for EF-M and don't mind manual focus, you'll enjoy the Samyang 50mm f/1.2.