https://www.youtube.com/watch?v=WyhDZL0Sg1I Chris tested the four High Res cameras from each company. That's what he thinks…
Sigma still confirms there is no way they can make Full Frame RF mount lenses yet
Phototrend had a chat with Sigma CEO Yamaki and again said “he can’t comment” on the possible new RF Full Frame lenses. I don’t think this will happen any time soon :8