Definition
Graininess refers to the visible texture in an image or substance, resembling small particles or grains. Think of it like the digital noise you see in low-light photos on your phone. It's a lack of smoothness or clarity. Instead of a sharp, clear image, you see a speckled or dotted effect. The opposite of a smooth, polished look, graininess is common in film photography or overly compressed digital files. It can sometimes be a stylistic choice, but often indicates low quality.