Is Canon EOS R7 and Canon EF 400mm f/2,8 L IS II USM compatible?

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

Canon EOS R7

Canon EOS R7
Released: 2022
Type: Mirrorless
Sensor: APS-C (1.6x)
33 Megapixels
6960 x 4640 pixels

Canon EF 400mm f/2,8 L IS II USM

Canon EF 400mm f/2,8 L IS II USM
Released: 2010
Telephoto Lens (prime)
Focal Length: 400 mm
Aperture: f/2,8

Can you combine these two?

This is the short answer:

Yes! This combination is compatible

The camera and lens you have chosen can be used together. Here is a longer answer:

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

Canon all the way

The possibility to combine these two products is great since both Canon EOS R7 and Canon EF 400mm f/2,8 L IS II USM are manufactured by Canon.

Versitale lens

Canon EF 400mm f/2,8 L IS II USM is constructed to work with all sorts of camera sensors including the one of Canon EOS R7.

Focal Length

The Canon camera has a sensor of type APS-C, a smaller version compared to a Full frame sensor, which means that your experienced Focal length will be multiplied by 1.6x.

Actual Focal Length for this lens:
400 mm

Experienced Focal Length with this camera:
640 mm

Read more about Crop factor on Canon cameras

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 R7
612 gram

Canon EF 400mm f/2,8 L IS II USM
3850 gram

Together they have a total weight of 4462 gram (equal to 9,84 lb).

Please note that Canon EF 400mm f/2,8 L IS II USM has a tripod mount which is great.

Read more about Tripod mount