https://www.youtube.com/watch?v=Zy1FoinKKpM Here is a review of an unusual RF-mount lens you can get for $400…
Samyang has officially requested the license to make RF-mount lenses

Phototrend had a chat with Kim Dubin, head of product planning at Samyang. And there is an interesting tidbit regarding their RF mount strategy:
As for a potential move to Canon RF and Nikon Z mounts, the lens maker is still waiting for official licenses from the Japanese manufacturers. But, interestingly enough, the latest AF 24-60 mm f/2.8 would already be technically easily adaptable to the RF mount, thanks to a shorter mechanical flange distance in the lens design.
