You set the camera to ISO 100 or ISO 200 because you want the cleanest possible photograph. Later, you open the file on your computer and find grain in the shadows, colored speckles in dark areas, or a rough texture…
Film Grain vs Digital Noise: What’s the Difference
Place a film scan beside a high-ISO digital photograph, and both may look “grainy” at first glance. Zoom in, though, and the resemblance starts to break down. Film grain is part of the physical photographic medium. Digital noise is unwanted…

