topic Re: EOS C100 Unable to assign up, down, left, right functions to other buttons in Professional Video

EOS C100 Unable to assign up, down, left, right functions to other buttons

greenlit — Thu, 04 Dec 2025 14:23:03 GMT

Hi. Trying to assign the first 5 buttons to function as the joystick (so i can get rid of the side grip) but for some reason i can't see the up, left, down etc function on the assign button menu (they actually should be at the end after 'Initialize Media'). I've checked the firmware and it's up to date. Anybody have any recommendations?

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

John_Q — Sat, 06 Dec 2025 00:31:45 GMT

Hello greenlit,

I noticed that you have the camera in [Playback] mode. These functions (assignable button items you are looking for) are not available in [Media] mode.

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

greenlit — Sat, 06 Dec 2025 09:15:03 GMT

The thing is that it doesn't change on the Camera mode - i still don't see them in the assignable button menu.

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

Nick2020 — Sat, 06 Dec 2025 13:34:32 GMT

There are only a select number of buttons that you can use for assignable button options. You won't be able to reassign buttons on the directional pad to have other functions.

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

greenlit — Sat, 06 Dec 2025 13:38:11 GMT

@Nick2020 No it's the other way around. Have you read the original message? I'm trying to use the cam without the side grip - and in order to do that i have to assign the joystick functions to the assignable buttons

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

Benzo15 — Wed, 17 Dec 2025 20:46:47 GMT

You can assign them to the number pad on the back of the camera. In the menu there’s an option in the drop down list for something called user assigned or similar. I did this when I had it on a gimbal.

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

greenlit — Wed, 17 Dec 2025 20:51:31 GMT

That's exactly what i tried to do - in this case you can't assign them to any buttons. Previous C100 that I've owned i was able to do it - this one doesn't even show the joystick functions on the assignable button menu

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

Benzo15 — Thu, 18 Dec 2025 00:53:08 GMT

And firmware is up to date?

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

greenlit — Thu, 25 Dec 2025 22:33:52 GMT

The firmware shows up as 8.0.1.1.00 - though the official firmware is 1.0.8.1.00. But i'm getting the your firmware is already up to date banner when i try to update it. As a side note 8.0.1.1.00 was never a firmware version that has ever been released for c100 so i have no idea what's going on there

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

shadowsports — Fri, 26 Dec 2025 03:38:03 GMT

Greetings,

The C100 mkI did not include DPAF originally.

If you have this hardware then FW 1.8.0.1.1.00 was applicable.

Canon CPS offered an upgrade where you sent the camera in to received sensor upgrade. This sensor included DPAF and allowed the mkI to be updated to v2.0.8.1.00. Later 2.0.9.1.00 was released.

https://www.usa.canon.com/support/p/eos-c100#idReference=software-drivers

To my knowledge the sensor upgrade is no longer being offered, but you can check with support to see if this this is still available.

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

greenlit — Fri, 26 Dec 2025 06:40:41 GMT

This post is not about DPAF though

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

shadowsports — Fri, 26 Dec 2025 16:55:13 GMT

Agree. The issue that I'm seeing with your hardware is that it doesn't seem to be listing a valid firmware. I suppose it could be a glitch but, it not having the 1. proceeding the actual firmware listed is partially suspect as to what may have been done to this camera. Are you the original owner? If not do you have history about the camera?

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

greenlit — Fri, 26 Dec 2025 22:14:14 GMT

^Yup - i agree. It's weird to say the least. I'm not the original owner and don't know the history. And as far as i know nobody would've been able to construct a custom fw for this camera. Just no idea what's going on with that.

Re: EOS C100 Unable to assign up, down, left, right functions to other buttons

Benzo15 — Sat, 27 Dec 2025 11:07:31 GMT

Are you on 1.0.8.1.00 ? That’s the last for non DPAF available. That’s indeed strange if you can’t assign them. I did notice when I tried to assign button 1 vs button 2, it had less options… so maybe look at that… for my firmware 2.0.9.1 (DPAF) ive assigned like this which I find very helpful. Also this did help me realise the internal battery was flat and all my settings were gone… if that happens you need to leave it plugged into mains for 24 hours to recharge the internal battery…