topic Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards in EOS DSLR & Mirrorless Cameras

EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

hannestell — Tue, 03 Jun 2025 15:36:18 GMT

With my Canon R5 Mark II, I got some serious issues with Angelbird CF-Express B cards. Every time I boot-up the R5II in movie mode, the camera freezes instantly after the screen goes on but before the control elements of the screen are shown. It consistently happens with both an AV PRO 256GB and an AV PRO 1TB. It seems as if the camera couldn't access the card or something. Switching off won't work, the battery has to be ejected, the camera has to be put in photo mode before the battery is put back in again. In photo mode though, the camera does boot up and I can switch into movie mode sometimes without freezing. It's a bit annoying since a range of tested SanDisk CF-Ex-B Extreme Pro cards with different capacities all work seemlessly..

The use of the Refresh via SSD Manager and FW update tool of the cards didn't change anything.

Please fix it with the upcoming FW update Canon. ASAP. This is making the camera borderline unusable.

The R5II has FW 1.0.2 installed. I checked disabling all other settings like network and power saver and so on..

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

deebatman316 — Thu, 06 Mar 2025 17:51:55 GMT

Are you using ANY 3rd Party accessories on the camera ie lens, mount adapter, speedlite or battery grip.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

hannestell — Thu, 06 Mar 2025 18:01:30 GMT

No. Also without any CF-Express-B card inserted but only an SD card it also works fine to boot up in movie mode. Even If I still have one of the Angelbird CF-Express B cards inserted and boot up with the SD card selected as card recording media, the freezing error doesn't occur. The error is independent of the selected recording mode or codecs.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

deebatman316 — Thu, 06 Mar 2025 18:04:58 GMT

Have you tried a different CF Express Type B to rule out the slot as the problem.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

hannestell — Thu, 06 Mar 2025 18:08:33 GMT

As already written in my initial posting: All CF-Express Type B cards from SanDisk (Extreme Pro 256GB, 512GB) work seemlessly. All tested Angelbird Cards (AV PRO 256GB as well as 1TB) consistently produce the same freezing error.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

deebatman316 — Thu, 06 Mar 2025 18:13:46 GMT

This is the first I’ve ever heard of a problem like this. Where did you buys these CF Express Type B cards at.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

hannestell — Thu, 06 Mar 2025 18:15:14 GMT

Well this is why I posted it. I bought them from Angelbird directly, what does it matter?

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

deebatman316 — Thu, 06 Mar 2025 18:20:13 GMT

We’ve had users buy counterfeit memory cards from Amazon and other various online retailers. They believed their camera was the problem but it was the card that was the problem.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

shadowsports — Thu, 06 Mar 2025 18:22:14 GMT

Greetings ,

It matters because some sources are unreliable and sell counterfeit cards. I have four angel birds CF Express type B cards and two sandisk. They all perform as expected. I'd contact AngelBird. They have a great warranty and stand behind their products.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

hannestell — Thu, 06 Mar 2025 18:24:05 GMT

Alright thanks, I understand. But this shouldn't be an issue when buying directly over their web store. So I would rule this one out and also not blame it on an individual card since the error is reproducible. Also the cards do work for recording photos and film in my R5 Mark II but just booting up with those cards in movie mode causes the camera to freeze. Booting up with the freshly initialized cards in my C300 Mark III works fine as well.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

deebatman316 — Thu, 06 Mar 2025 18:27:12 GMT

Spot on Rick.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

deebatman316 — Thu, 06 Mar 2025 18:36:49 GMT

Have you contacted AngelBird about the cards not working correctly in the camera.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

shadowsports — Thu, 06 Mar 2025 20:39:24 GMT

Greetings,

Please save your current configuration to an SD card. Now reset the cameras, main and custom settings. Retest with the Angel bird cards.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

hannestell — Thu, 06 Mar 2025 20:41:49 GMT

Sure, the conversation is ongoing. Taken into consideration though that the cards work as expected in camera, I'd logically rule out corrupted cards. Those Angelbird cards both work in the exact same R5II body in both photo and movie mode. Just when booting up they camera freezes. Also booting up in other Canon cameras like my R5 Mark I and the C300 Mark III (of course after initializing media) is working fine. So my logic dictates an error in the card reading process of the R5 Mark II.

Can you follow my logic?

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

hannestell — Thu, 06 Mar 2025 21:01:01 GMT

Thanks, this was very helpful. For now indeed the freezing does not occur with the cards anymore. 🙏

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

Bramble — Tue, 03 Jun 2025 12:25:25 GMT

Hi - can you tell me what the solution was? I also have Angelbird CFExpress cards and am experiencing a different problem with my Canon R5 Mk II - one card has completely corrupted and my computer can’t access it anymore. The second card has some files that I cannot see - but only those taken with the R5 Mk II.

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

LeeP — Tue, 03 Jun 2025 15:34:28 GMT

I'd never heard of the "Angelbird" brand and maybe I don't get out much or maybe I live under a rock, but what is so special about Angelbird versus "better known" (to me) brands?

Re: Canon EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

deebatman316 — Tue, 03 Jun 2025 15:40:50 GMT

Anglebird memory cards are geared to videographers. Mainly due to high write speed, build quality and large capacity. Anglebird is also a respected brand for videographers. Their cards are also expensive too.

Re: EOS R5 Mark II freezing with all Angelbird CF-Express Type B cards

shadowsports — Tue, 03 Jun 2025 16:27:29 GMT

+1 AngelBird cards are top quality. I have 4 now and have been using them since mid 2022. Fast, reliable, with a great warranty.