An EF-EOS R lens adapter enables Canon EF, EF-S, TS-E and MP-E lenses to be used on cameras that have the RF mount.

[9] The three adapters have differing features:[10] If an EF-EOS R Mount Adapter is used to mount an EF-S lens, the image will have to be cropped by 1.6x due to the smaller image circle on EF-S lenses.

The cameras that can use the RF mount are: Note: The Samyang, Yongnuo, and Viltrox autofocus lenses are discontinued due to requests by Canon [55]

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