I was excited when Canon and Nikon finally stepped into the mirrorless game seriously more seriously, releasing their full-frame mirrorless cameras in 2018. Nikon launched their Z6 and Z7 with the new Z-Mount, while Canon released the EOS-R with a new RF-Mount. Taking a closer look to the mount design, both companies adopt very similar approach, and I can’t help but notice the similarities and be reminded of what Four Thirds promised and delivered in 2003 when Olympus DSLR E-1…