High ISO speed Noise Reduction - EOS R5 Tip 20
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- Опубликовано: 7 авг 2024
- In this episode we're talking about the second kind of noise reduction that's built into the EOS R5 (among other Canon cameras), High ISO speed noise reduction.
The R5 offers two modes for high ISO NR. One is the more traditional approach that averages pixel values and can ultimately blur or remove details, with 3 strength levels. The other option is a multi-shot noise reduction mode that stacks multiple images together to make a single JPEG output.
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00:00 Intro
04:01 Multi-shot Noise Reduction
08:47 Recommendations
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Great vids man, very informative
excellent, as always!
Cheers Points In Focus this really helped.
Hi, I have a question about R5 noise. I found even in low ISO and good light conditions, my R5 has also noticeable noises if I watch the picture(raw or jpg) in 100% size.
Is this normal?
Thanks.
To some extent yes, but how much depends on a lot of factors from sensor temperature to the specific ISO you're using.
The R5 uses a dual gain sensor which can result in unexpected performance at low ISOs. For example, ISOs 200-320 can be noisier than shooting at 400-640.
Also the longer the camera has been on and in the sun, the warmer the sensor will be and that will result in increased noise in images. Being mirrorless makes this a bit more of a problem since the sensor is both used to create the live image and is exposed to light any time the camera is on (where a DSLR kept the sensor off and sheltered behind the mirror and shutter when it wasn't being used). Though hot cameras producing noisier images isn't new to mirrorless cameras, and I always try to keep my cameras out of the sun as much as possible to keep them as cool as possible.
This latter part can be a real problem. I have images shot outside at mid day during an airshow where the camera's internal temp was high enough (50°C according to the metadata) where the ISO 500 images look as noisy as I'd expect ISO 1250-1600 images to be.
Hi, Good info.....but I find if I disable all noise reduction in camera it still gets applied to the embedded jpeg or jpeg rendered by the camera and when viewing the raw filw in DPP noise reduction is applied.
Checking the file info, ctl+i, in DPP shows that indeed noise reduction is disabled. Canon customer service has no answer. I do use jpegs quite a lot for focus stacking and find Canon DLO does a good job without DPP sharpening.
I don't have a good answer to that either.
That said, DPP does more than just high ISO NR. The NR settings found on the "Adjust image detail" tab don't have an in camera equivalent and have to be set in DPP specifically. Turning off NR in camera won't turn those off too.