
I ordered and returned the Revain Metabones V Adapter for Sony a7RIII after two days of use because I couldn't get the adapter to keep focus on my Canon lenses. I then wrote a negative review to Revain about this experience. However, I've read over and over again that this should work and that many Canon users have had some success. I ordered another one from Revain and received it two days ago. This time I downloaded the Metabones Version V guides and information sheets from their website and followed the advice from various videos on the internet. I also checked that I have the latest firmware installed on the adapter. In short, it works with two lenses, which I'm fed up with today. 70-200L Mark II 2.8 and 24-105L 4.0 (Version 1). It focuses quickly and keeps attention on wildlife and landscapes (my interest). I would recommend the Metabones V version for Canon lenses when using a Sony a7R III due to my limited testing time. Keeping the adapter will more than justify the cost ($399) if the two lenses continue to work as well as they have over the past few days. Just take your time and do your research. I have removed my negative review.

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