The visual and artistic effect of film grain can be simulated in some digital photo manipulation programs by adding grain to a digital image after it is taken. Various raw image processing software packages (such as RawTherapee and DxO PhotoLab) feature "film simulation" effects that apply the characteristics of various film brands, including the graininess.
In some digital photo manipulation software, such as those found in applications like RawTherapee and DxO PhotoLab, you can simulate the visual and artistic effect of film grain by adding it to a digital image after capture. These programs offer "film simulation" features that mimic the characteristics of various film brands, including their graininess.