Canon Drop-In Filter Mount Adapter EF-EOS R with Variable ND Filter– CP+ 2019
https://www.newsshooter.com/2019/03/0...
The Canon Drop-In Filter Mount Adapter EF-EOS R with Variable ND Filter has just started shipping in Japan and it will start shipping in the US on the 4th March.
At CP+ 2019 in Japan, we filmed a demonstration of how it works.