Canon RF 400mm F/2.8 L IS USM

Where can this lens be adapted?

The Canon RF mount has a flange distance of 20 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work

• Native lenses set the aperture, and often the focus, electronically. On a plain adapter they do not work. Use an electronic adapter made for this pair; for many pairs nobody makes one. Fully manual lenses are the exception.
• RF-S lenses cover APS-C only.

• Sony EAdapter · 2 mm

  The camera mount (46.1 mm) is narrower than the lens mount (54 mm). A large rear element can darken the corners.

• Canon RFNative
• Nikon ZAdapter · 4 mm
• Fujifilm XAdapter · 2.3 mm
• Canon EF-MAdapter · 2 mm

No plain adapter reaches infinity focus on: L-Mount, Micro Four Thirds, Fujifilm G (GFX), Canon EF, Nikon F.