I was just editing some tit photos I made on our balcony, and I found really strange patterns of noise over the bird's feathers:
The photo is from Nikon D5600, settings 85mm F4.0 1/1000 ISO 160
These are individual pixels exported from RAW and even if I went all the way to the beginning of my edit history, these patterns are still there. Is this an error in demosaicing, or is it a feature of the photo? I can provide the RAW file but I am not sure where to upload it.
I am using darktable, if it's software related, it the cause might be there. I would like to get rid of these.
RAW file: https://drive.google.com/file/d/1gDMyE5UaAvhvcFhv0qoRbf9ada6XtHvK/view?usp=sharing