Is Canon EOS R5 C and Canon EF 400mm F2.8 L IS II USM compatible?

Below you will find your chosen camera and lens. Click on the product name for more information.

Canon EOS R5 C

Canon EOS R5 C
Released: 2022
Type: Mirrorless
Sensor: Full frame
45 Megapixels
8192 x 5464 pixels

Canon EF 400mm F2.8 L IS II USM

Canon EF 400mm F2.8 L IS II USM
Released: 2010
Telephoto Prime Lens
Focal Length: 400 mm
Aperture: f/2,8

Can you combine these two?

Last updated: March 2024

This is the short answer:

The camera and lens you have chosen can be used together if you use the desired adapter.

You must use an EOS R adapter

This Canon lens is not part of the Canon EOS R-system but it can still be used with Canon EOS R cameras. To use this lens on this camera you need an adapter.

Canon Lens Mount Adapter EF-EOS R

Focal Length

The Canon camera has a sensor of type Full frame which means that your experienced Focal length will be same as the lens specification tells us.

This lens has focal length:
400 mm

Since Canon EOS R5 C has a Full Frame sensor this is also the focal length you will experience.

Total weight

When you are looking at a combination of a camera and a lens you must always consider the total weight. Each product weighs in at:

Canon EOS R5 C
770 gram

Canon EF 400mm F2.8 L IS II USM
3850 gram

Together they have a total weight of 4620 gram (equal to 10.19 lb).

Please note that Canon EF 400mm F2.8 L IS II USM has a tripod mount which is great.

Read more about Tripod mount

Compatibility Check ID: 1500