Canon R5 - Can I customize the Rate button?

[TimBirder]

Like many people, I rate my images in post, not in camera. It seems a shame to limit a valuable button to just Rating tasks. Can it be customized to include other things? I would love to use it to toggle between Mechanical and Electronic shutter. Thank you!

[Lotus7]

Unfortunately, the EOS R5 programmability of the RATE Button is limited to:

1.  Setting image Rating (obviously)

2.  Recording voice memos

3.  Playing voice memos

4.  Protecting or Clearing Image Protection

5.  Erasing Images

See Manual (Rate Button Functions) pp.568

However, the Customize Buttons Menu (Manual pp. 814) can assign alternate functions for the following buttons:

Shutter (half-press)

Multi Controller

Movie Button

Mode

AF-ON

AE-Lock

AF-Point

DOF Preview

and for some Canon Lenses even the function of the AF-Stop Lens Button can be customized.

[giovannim]

Old thread but still current, as the R5 II has the same "issue".
I'd really like to hear from someone at Canon the reason why wasting a button like this! Why can't we make it work also while shooting? Such a shame

I would not expect such silly limits on an almost €5k camera.