topic Re: Can't Disable R6 Mark II Noise Reduction in EOS DSLR & Mirrorless Cameras

Can't Disable R6 Mark II Noise Reduction

killacameron — Wed, 14 Aug 2024 17:17:10 GMT

I've set High ISO speed NR to OFF in my R6II, but it's still applying noise reduction to both straight-out-of-camera JPEGs and RAWs in DPP. The noise reduction is clearly visible on the JPEGs, and when a RAW is opened in DPP the shot settings display non-zero values for both Reduce luminance noise and Reduce chrominance noise.

What am I missing?

Re: Can't Disable R6 Mark II Noise Reduction

TomRamsey — Wed, 14 Aug 2024 23:39:45 GMT

I don't use DPP, but is it possible that it is running a preset on import? Also do you have long exposure NR turned off? Is it the same on any lens? And if you have another camera to check, are you getting the same values?

Re: Can't Disable R6 Mark II Noise Reduction

killacameron — Thu, 15 Aug 2024 00:35:27 GMT

1) DPP is set to "Apply camera settings" for noise reduction. Also the JPEGs all have noise reduction straight out of camera and they never touch DPP
2) Long exp. noise reduction is set to OFF
3) Tried it on RF 24-105L and RF 100-400, happens on both
4) Don't have another camera body available to check

Re: Can't Disable R6 Mark II Noise Reduction

shadowsports — Thu, 15 Aug 2024 04:04:46 GMT

Greetings,

Are you using Custom Function modes?

Re: Can't Disable R6 Mark II Noise Reduction

p4pictures — Thu, 15 Aug 2024 11:55:24 GMT

High ISO noise reduction is applied to images with higher ISO settings. For JPG, the processing is done by the DIGIC processor in the camera based on the settings standard, high or off. For RAW images the setting in the camera is saved as part of the metadata in the RAW image. DPP reads that setting from the RAW and applies appropriate levels of luminance and chrominance noise reduction depending on the ISO and the particular camera model. Simply setting high iso noise reduction to OFF in the camera does not result in zero noise reduction being applied in DPP when processing a RAW file.

In the DPP settings Image Processing1 the default is to apply camera settings, but you can change this to apply your own settings, including zero for both luminance and chrominance.

See the attached screenshots for the settings in DPP with the default and the manually set zero values.

Re: Can't Disable R6 Mark II Noise Reduction

killacameron — Thu, 15 Aug 2024 12:25:10 GMT

Happens in Custom Function modes and regular modes.

Re: Can't Disable R6 Mark II Noise Reduction

killacameron — Thu, 15 Aug 2024 13:11:33 GMT

With DPP set to "Apply camera settings" the expected behavior is for DPP to use the as shot camera settings, not to come up with its own. This is easily demonstrated by opening a RAW in DPP and comparing it to the straight out of camera JPEG of the same shot. They look identical.

That said, I'm not concerned about DPPs behavior because as you pointed out, I can always change the noise reduction values. I'm simply using DPP to confirm that the straight out of camera JPEG's do in fact have noise reduction applied even when High ISO speed NR is set to OFF in the camera. This is easily demonstrated by comparing the JPEG to the RAW in DPP, as above. They are identical. To further illustrate this, setting Reduce luminance noise and Reduce chrominance noise in DPP to 0 results in a significantly noisier image than the SOOC JPEG.

Here is a comparison. You can see that even with High ISO speed NR set to OFF in camera, there is still significant noise reduction applied to the SOOC JPEG. What's interesting is that it's less noise reduction than when High ISO speed NR is set to LOW, which implies that there's a base level of noise reduction in the R6II that cannot be disabled in camera.

Re: Can't Disable R6 Mark II Noise Reduction

Peter — Thu, 15 Aug 2024 19:42:28 GMT

Please share the raw files + the JPEG files. Put them in a zip file and use a filehost.

Looks like the exported JPEG from the raw file has some sharpening added, right?

Re: Can't Disable R6 Mark II Noise Reduction

killacameron — Fri, 16 Aug 2024 17:15:32 GMT

The only adjustment I made to the RAW in DPP before exporting as JPEG was changing noise reduction to 0. Sharpening should be the same.

Here is a zip of fresh SOOC JPEGs and RAWs for High ISO speed NR set to off, low, standard and high.

Re: Can't Disable R6 Mark II Noise Reduction

Peter — Fri, 16 Aug 2024 18:45:00 GMT

SOOC JPEG has no colour noise so NR is applied. It seems like you can't turn that feature off.

Re: Can't Disable R6 Mark II Noise Reduction

killacameron — Fri, 16 Aug 2024 19:34:38 GMT

SOOC JPEG has luminance NR applied too. You can see it by turning it off completely in DPP and comparing.

There seems to be a base level of noise reduction (both luminance and chrominance) that cannot be disabled in camera, even with all NR settings turned off. Even DPP reflects this with the RAW: with NR turned off in camera, the as-shot reduce luminance and chrominance noise values are 7.6 each. Lower than with NR set to "low" in camera which has them at 8.0, but definitely not 0!