We have partial confirmation that Canon plans to bring one of the most popular and highly-regarded EF-M lenses to the RF mount.
We are told that Canon will be announcing an RF-S 22mm f/2 STM alongside the rumored Canon EOS R50. We expect these announcements to come in the first quarter of 2023.
The optical design will be pretty much the same as what we have now in the EF-M 22mm f/2 STM. We expect a couple of other EF-M lenses to be moved over to the RF-S mount.
Canon EF-M 22mm f/2 STM Key Features
- Compatible with EOS M Mirrorless Camera
- Moderate Wide-Angle Lens
- Bright f/2 Lens Aperture
- Exceptional Low-Light Performance
- One Aspheric Lens Element
- Built-In Stepping Motor
- Smooth & Continuous AF
- Seven Blade Circular Aperture
- Short Minimum Focusing Distance of 5.9″
EF-M lens uses RF mount = EF-M MSRP * 1.3
Which, since there aren't that many, is probably most of them.
Sigma Netherlands claims that "a number" of mirrorless lenses for Nikon Z-mount will "probably" be released in 2023 - Nikon Rumors
I wonder how much it will grow in its new RS-S embodiment.
Because Canon won't let them.
My favorite lens for the m-system, sharp and nice already at f/2. I will most likely get the RF-S version, if it uses the same optical formula and a small camera is released like rumored.