Why my photos has this much of color noise?
Why my photos has this much of color noise? Lately I realized this ugly noise in my photos, much more aparent in gray backgrounds, its colored, and let various patchs of it spread across the pic, in this image particularly I used ISO 400, but no mater the ISO I'm using, I always realize this distorcion in color. Is my camera lacking some calibration, or is it a Lightroom fault? https://pr...