From https://helpx.adobe.com/camera-raw/kb/supported-lenses.html:
| Manufacturer | Lens | Lens Mount | Minimum Camera Raw plug-in version required | Minimum Lightroom version required | Minimum Lightroom Classic version required |
|---|---|---|---|---|---|
| Canon | Canon RF 28mm F2.8 STM | Canon RF | 15.4 | 6.4 | 12.4 |
| Canon RF 100-300mm F2.8 L IS USM | Canon RF | 15.4 | 6.4 | 12.4 | |
| Canon RF 100-300mm F2.8 L IS USM + EXTENDER RF1.4x | Canon RF | 15.4 | 6.4 | 12.4 | |
| Canon RF 100-300mm F2.8 L IS USM + EXTENDER RF2x | Canon RF | 15.4 | 6.4 | 12.4 |
