I have been screaming for this, now someone has heard 🙂
I have been begging for Metabones to make a fully AF compatible focal reducer-speed booster for EOS EF to EOS EF-M. The annoying thing is that making it would require little engineering that Metabones hasn’t already done. Metabones makes an EOS EF to Sony E already. The flange distance on the EOS-M is identical to Sony E and the mount diameter is very similar as well. A simple mount bayonet and pass through electronics are all that is needed both of which have been in the third-party market for years. The Sony adapter required Metabones to make complex software translation hardware so that the Canon EF lens could “talk to” the Sony body. None of that is needed going EF to EF-M. So what is the deal Metabones?
Well Viltrox has done it. They launched an adapter in late October that allows the use of an EOS EF lens on the EOS M series cameras with full electronic communication. I bought it the second I could. I am here to say it works brilliantly and there are no optical issues I have found at all. This is my second EOS-EF to EF-M focal reducer I bought. The first was a cheap unit that had no electronics at all. I used that with several manual focus SLR lenses that I had converted to EF mount. That low-budget unit worked very well except it has a tendency to induced some weird flare in certain lighting situations. This Viltrox unit suffers no such issues.
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