DKRAW

5 minutes ago, Shield3 said:

Does not list the output resolution of HDMI though.  Only states "On the plus side, the EOS R does have 4:2:2 10-bit video output externally via the HDMI port (internally, it's 8-bit)."

4:2:2 10-bit video output, HDMI 4K out - 3:49

Very Nice, they did it !  Drop-in Filter Mount Adapter EF-EOS R ($299.99 with a CPL, $399.99 with a variable ND, available in March