topic Re: Canon R5c color noise in Professional Video

Canon R5c color noise

eblesofsky — Sun, 27 Oct 2024 04:28:51 GMT

I’ve struggled with color noise issues in my Canon R5C CLog3 and any FPS footage. No matter what I’ve tried or which video I’ve watched, none of them have helped. I’ve shot at the lowest ISO and at the native ISO value of 800, along with base 3200 both in well-lit environments and in low light. Despite all my efforts, I haven’t been able to get rid of the noise problem. I have tried bt 709 and clog 3.

I really love my camera, but no matter which LUT or color settings I use, the quality is really poor. I’m considering selling my camera this week. ? Can you help me understand why I can’t get rid of this noise issue?

Re: Canon R5c color noise

shadowsports — Sun, 27 Oct 2024 06:18:10 GMT

Greetings,

For our benefit, can you please provide the mode, frame rate, etc you were shooting in?

What lens are you shooting with?

What are you doing your post-production in?

Are these screen grabs from video, or are these still images?

Maybe you can provide raw image samples for us. You'll need to use a photo sharing service and provide links.

Re: Canon R5c color noise

eblesofsky — Sun, 27 Oct 2024 06:21:42 GMT

Evening, those are in fact screen grabs from davinci resolve.

shot in Slow and fast mode 60/120

xfavc long gop 4k

r5c with 24-70 2.8

Re: Canon R5c color noise

shadowsports — Sun, 27 Oct 2024 19:26:03 GMT

Greetings,

Thanks for the additional info. I see florescent lighting. Can you also let us know what Kelvin temperature you're shooting at and what firmware version you running (sorry should have asked). I need a little time, we have family in town. I'll also ask a colleague (AtticusLake) to take a peek.

Re: Canon R5c color noise

AtticusLake — Mon, 28 Oct 2024 08:03:50 GMT

I'm afraid I don't have much to offer here. I can't really see the noise in the images you posted -- I guess it's more visibile in movies.

Does this happen just in slow-mo? Or in regular speed too? In slo-mo (i.e. high-speed shooting) the camera does less processing on the image, because the volume of data is too high. For example above a certain frame rate oversampling is no longer used.

Re: Canon R5c color noise

dirceumelo — Tue, 28 Jan 2025 18:09:00 GMT

Which memory card are you using? CF Express-B or SD? If it is SD, what type? V30, v60, v90? This excessive noise may be compression due to sd card type. Also try comparing with compression on All-i instead of LongGOP to see if the problem persists.

Re: Canon R5c color noise

AtticusLake — Tue, 28 Jan 2025 18:33:11 GMT

Your choice of memory card doesn't affect compression. Compression is dictated by the codec and resolution you select; the video is compressed according to those settings, and then stored to memory. The card is either fast enough to take it, or not, in which case you should get an error message.