built to work with a Sigma camera using the SA mount. As it turns out, the SA mount is actually based on the Canon EF mount, using the same communications methods and having a similar contact block.

They join four other Sigma lenses available for the Canon RF mount, all of which are designed for crop sensor (APS-C) models such as the Canon EOS R7 and Canon EOS R100. The new lenses increase ...

Sigma and Blackmagic Design ... despite all the appearances in the top 20, Canon EF rentals declining, year-on-year. This is enough to see RF mount lenses add up to around 50% more rentals than ...