topic Re: Canon R5 C Concerns/Issues in Professional Video

EOS R5 C info screen stays on, waveform graph clipping at 80%

QuickBrownFox — Tue, 26 Mar 2024 15:54:51 GMT

I recently purchased this R5 C from eBay and am noticing some odd behaviors and unsure if these are normal/known issues. The info screen on the top of the camera body stays "on" when the camera is off. If I open the battery door, then the screen actually turns off, but once I close the battery door with a battery inside, the screen turns back on but stays black. In direct sunlight, I can visibly see this screen flickering.

I also had another issue/concern where there were times the waveform graph would have its clipping point at 80% instead of 100%. The graph wouldn't go higher than 80% almost as if the whole graph was compressed so pure white is now at 80% instead of 100%. Sometimes the waveform graph works as expected where pure white is 100%, but other times it goes back to 80% being the clipping point.

I am on the latest firmware 1.0.6.1.

Re: Canon R5 C Concerns/Issues

shadowsports — Tue, 19 Mar 2024 21:49:22 GMT

Greetings,

Whenever you buy a used product, the first thing you want to do is reset its main and custom settings. This gives you a known "hopefully" good starting point.

If it were me, I'd return it and avoid any grief. Ebay just isn't a good place to buy a camera or a lens. It's up to you, but often these purchases are more trouble than they are worth.

Re: Canon R5 C Concerns/Issues

AtticusLake — Wed, 20 Mar 2024 08:44:06 GMT

Looking at my R5C...

The info screen on the top of the camera body stays "on" when the camera is off.

Do you mean "on" but all black? Mine does that. It's not an issue, monochrome LCD screens use virtualy no power.

If I open the battery door, then the screen actually turns off, but once I close the battery door with a battery inside, the screen turns back on but stays black.

Yup, mine does the same.

In direct sunlight, I can visibly see this screen flickering.

Yup, I notice this once in a while. It seems like a bug, but a pretty harmless one as far as I can tell.

I also had another issue/concern where there were times the waveform graph would have its clipping point at 80% instead of 100%.

This sounds like a consequence of your shooting mode -- specifically the gamma cuve in your colour profile. Different gamma curves map lightness into pixel values in different ways. When I switch to the "PQ" colour profle, i see the waveform clip at 80%, exactly as you describe. But I usually shoot Log 3, and then it goes all the way to 100.

Hope this helps.

Re: Canon R5 C Concerns/Issues

shadowsports — Wed, 20 Mar 2024 14:47:07 GMT

Ian, thanks for replying. This is interesting because I don't think my LCD stays on when I turn the camera off. Or else I'm seeing the "all black" as off. I'll check today.

Re: Canon R5 C Concerns/Issues

QuickBrownFox — Fri, 22 Mar 2024 21:20:10 GMT

Hi Atticus thank you for your response! I am using CLOG 3 and that's actually where I experience the 80% clipping. I've attached a photo showing the waveform graph (right) as well as CLOG3 in C Gamut (left).

Re: Canon R5 C Concerns/Issues

AtticusLake — Sat, 23 Mar 2024 08:32:00 GMT

Then I don't know. However I still think it's really unlikely that anyting so specific could be caused by any kind of damage -- I think it's most likely due to some shooting mode you have set, or some setting within your colour profile, or something like that.

Try changing shooting modes and see if you can narrow down what causes it. If it's CP2, then I would suspect that your CP2 has been edited, because mine doesn't do that. So maybe do as Rick suggested and do a full factory reset.

Re: Canon R5 C Concerns/Issues

orfeasskutelis — Sat, 22 Mar 2025 14:41:03 GMT

I am experiencing the same on both R5C and C400. I couldn't find the answer anywhere. Is there an online place where someone from Canon can answer this?

Re: EOS R5 C info screen stays on, waveform graph clipping at 80%

shadowsports — Sat, 22 Mar 2025 15:30:26 GMT

Good morning ,

You may want to start your own topic with current information about your issue. Hopefully you're on a later version of firmware as there have been significant changes since 1.0.6.1. I would not expect to see similar behavior on another device (C400).

One other possibility, check your white balance settings. This is the only other thing I can think of that may change the display of your waveform.

Additionally, I recommend you contact Canon Support. This will get you a definitive answer. Start by registering your camera in your MyCanon portal. Then contact support 1-800-652-2666.

MyCanon