Canon image quality/rendering
okay, that's very well possible. I don't know your workflow, it's clearly different from mine. I also acknowledge the quality of noise might be just as much model-dependent as brand-dependent. I find sometimes luminance noise (not so much chroma noise) can be left untouched in certain parts of the image where it blends in with the texture I think it adds to the image) while selectively reducing (or completely removing) all noise in other parts of the image. I find that often gives me a very good result. But then probably everyone does NR selectively, whole-image NR is of limited use.