Is Canon EOS R7 and Canon EF 300mm F2.8 L 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 300mm F2.8 L USM

Canon EF 300mm F2.8 L USM
Released: 1987
Telephoto Prime Lens
Focal Length: 300 mm
Aperture: f/2,8

Can you combine these two?

Last updated: June 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 APS-C, a smaller version compared to a Full Frame sensor, which means that your experienced Focal length will be multiplied by 1.6x.

This lens has focal length:
300 mm

Since Canon EOS R7 does not have a Full Frame sensor the experience focal length you will experience will be:
480 mm

Read more about Crop factor

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 300mm F2.8 L USM
2855 gram

Together they have a total weight of 3467 gram (equal to 7.64 lb).

Please note that Canon EF 300mm F2.8 L USM has a tripod mount which is great.

Read more about Tripod mount

Compatibility Check ID: 1600

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Canon EOS R7
Canon EF 300mm F2.8 L USM