
Since the launch of the Canon EOS R system in 2018, Canon has been extremely restrictive when it comes to the development of third-party autofocus RF lenses. It appears that Canon has just loosened the stranglehold, though, as Tamron has announced the development of its first RF lens – with autofocus – and Sigma is set to follow suit later in the year.
Tamron has revealed that its first RF lens is in development, and will be the Tamron 11-20mm f/2.8 Di III-A RXD – an ultra-wide-angle RF-S zoom lens designed for Canon's APS-C cameras such as the Canon EOS R7 and Canon EOS R50.