Diffusion

The Diffusion tool adds a diffuse glow with control over size and emulation of filter grades. Color offset lets you add a tint to the glow effect in order to emulate a tinted diffusion filter. |  | Size: The range of diffusion, as a percentage of total image size. Grade: Adjusts the softness of the diffusion grade. Glow: Amount of luminance/bloom added to highlights. Highlights Only: The extent to which operation is restricted to the brightest regions of the image. Highlight Bias: A lower number pushes more of the image into the Highlights region. Exposure Compensation: Corrects for any resulting changes in overall exposure. Color: Tints the glow area.