topic Re: R5C with 16mm f2.8 Lens - Video looks constantly dark. in Professional Video

R5C with 16mm f2.8 Lens - Video looks constantly dark.

SCSR_Studios — Mon, 12 May 2025 12:37:47 GMT

I have an R5C and I'm shooting with a 16mm f2.8 lens. I have auto iris and auto ISO turned on and everything looks super dark. Even with studio lights, I feel like the camera is several stops down from where it should be. I've talked to canon support multiple times and we just cannot figure out why the video looks awful. I have to color grade everything substantially in Davinci Resolve. I followed both tech support and a youtube video about setting up auto exposure on videos and I feel like the settings are all correct. Anyone have any ideas?

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

rs-eos — Mon, 12 May 2025 13:26:07 GMT

What were the settings used for the scene (aperture, shutter, ISO)? If you take a photo, is that also underexposed? If you put the camera in full auto, do the photos also end up underexposed?

Any details you can provide on the continuous lights you used would also be helpful.

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

shadowsports — Mon, 12 May 2025 14:57:08 GMT

Greetings,

Adding to Ricky's questions... Can you test with another lens? What video mode are you shooting in? Are you shooting in RAW / CLOG?

Might you have set low or high aperture/ ISO values?

Please provide as much information as possible as it will help us understand your issue better.

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

SCSR_Studios — Mon, 12 May 2025 15:20:58 GMT

Photos are absolutely perfect. I used Auto ISO and Auto Iris on all videos.

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

SCSR_Studios — Mon, 12 May 2025 15:22:03 GMT

I can test with another lens yes, I will get that done, but photos look amazing. I am not shooting in Raw or CLOG. I don't really know how to shoot in CLOG just for the fact that I don't know how to setup Resolve color grading for CLOG.

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

shadowsports — Mon, 12 May 2025 17:00:01 GMT

Greetings,

Please also verify your kevin, white balance setting.

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

rs-eos — Mon, 12 May 2025 17:11:13 GMT

For the photo, what were the exact settings? If you then set to manual with those same settings, the video should be good. Of course account for the desired shutter speed by adjusting aperture and ISO to an equivalent exposure.

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

SCSR_Studios — Mon, 12 May 2025 17:39:02 GMT

You can't do that with the Cinema OS, the modes are completely different.

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

SCSR_Studios — Mon, 12 May 2025 17:39:15 GMT

Auto white balance.

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

rs-eos — Mon, 12 May 2025 17:44:07 GMT

Surely you're able to see what the settings are though. For the photo with proper exposure, what are the exact settings being used? When taking video footage, what are the exact settings used there?

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

SCSR_Studios — Mon, 12 May 2025 17:46:16 GMT

I can definitely also look at that, I thought you meant use the same exact setting in Video as I do in Photo mode. Is this really apples to apples though?

Re: R5C with 16mm f2.8 Lens - Video looks constantly dark.

rs-eos — Mon, 12 May 2025 18:56:47 GMT

We're talking about exposure; so the exposure triangle equally works for both photos and video. The only difference with video is that you typically have the shutter speed set to using a 180º shutter angle (e.g. 1/60 sec if capturing 30 fps, 1/50 (1/48) s if capturing 24 fps). And, you typically also use the base ISO for video (usually around 800).