Diffuse lighting refers to illumination that is soft and even, producing low to moderate contrast in a scene. It occurs naturally on overcast or cloudy days, when sunlight is scattered by clouds, or can be created artificially using softboxes, umbrellas, or diffusers in studio setups.
In photography, diffuse lighting reduces harsh shadows and highlights, creating a gentle, flattering effect that is ideal for portraits, product photography, and macro work. It helps reveal detail across the subject while maintaining a natural, balanced look, making it a versatile tool for photographers seeking controlled, even illumination.