metabones just launched their speedbooster for the M cameras
https://www.canonwatch.com/metabones-announced-ef-to-eos-m-speed-booster-ultra-7-1x/
at 480$ it's priced quite high...same as the bodies themselves...viltrox had a speedbooster for some time at 150$ but i've read it has issues
https://www.canonwatch.com/metabones-announced-ef-to-eos-m-speed-booster-ultra-7-1x/
at 480$ it's priced quite high...same as the bodies themselves...viltrox had a speedbooster for some time at 150$ but i've read it has issues