What are these two buttons on the 200-800?

Ali · Dec 15, 2023

Sorry for the possibly naive question, but what are these two circular buttons on the lens? None of my other lenses have these.

The generic "manual" that comes with the lens doesn't say it, and the Canon website doesn't seem to have a better user manual for the lens.

maarensv · Dec 15, 2023

Ali said:
Sorry for the possibly naive question, but what are these two circular buttons on the lens? None of my other lenses have these.

The generic "manual" that comes with the lens doesn't say it, and the Canon website doesn't seem to have a better user manual for the lens.

By default they are AF stop buttons.

They can also be programmed as function buttons, depending on camera used.

Ali · Dec 15, 2023

maarensv said:
Ali said:

Sorry for the possibly naive question, but what are these two circular buttons on the lens? None of my other lenses have these.

The generic "manual" that comes with the lens doesn't say it, and the Canon website doesn't seem to have a better user manual for the lens.

Click to expand...

By default they are AF stop buttons.

They can also be programmed as function buttons, depending on camera used.

Ah, thanks! I now see it in the R5 user manual.

And it seems that even though there are two buttons, they are the same - can't see a way to customize them separately. Let me know if I'm wrong...

Wingsfan · Dec 15, 2023

Are you sure that's not where the airbags deploy from, if the camera or body detects that it's getting dropped!!

Ktsa5239 · Dec 16, 2023

Would be awesome if the buttons can be programmed to a focus distance preset. That will give an fast way to pull focus back to the front when it’s stuck in the background

kikimora · Dec 16, 2023

Ali said:
And it seems that even though there are two buttons, they are the same - can't see a way to customize them separately. Let me know if I'm wrong...

Indeed, they are the same.

The reason the button is duplicated is to hace it in the same place for both “landscape” and “portrait” orientation, much like the extra buttons and dials on the vertical shooting grip.

R2D2 · Dec 16, 2023

Does anyone know if they can be programmed as "AF Preset" buttons? To go to a previously set focusing distance?

That would be my own preferred use case for them.

R2

bodeswell · Dec 16, 2023

You can download the English language lens "manual" (has actual information about the lens) from the Canon Europe site. For some reason known only to Canon the PDF isn't available on the US site.

RF 200-800mm F6.3-9 IS USM - Canon Europe (canon-europe.com)

Ali · Dec 16, 2023

bodeswell said:
You can download the English language lens "manual" (has actual information about the lens) from the Canon Europe site. For some reason known only to Canon the PDF isn't available on the US site.

RF 200-800mm F6.3-9 IS USM - Canon Europe (canon-europe.com)

Ah, cool. I was thinking strange that there’s no real user manual for such a lens.

Thanks!

A_Str8 · Dec 17, 2023

What function do folks typically assign to these buttons? This will be my first lens with a button

BirdShooter7 · Dec 17, 2023

A_Str8 said:
What function do folks typically assign to these buttons? This will be my first lens with a button

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What are these two buttons on the 200-800?

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