The Grain section of the Effects tab has controls for simulating film grain for a stylistic effect reminiscent of particular film stocks. You can also use the Grain effect to mask enlargement artifacts when making large prints.
Together, the Size and Roughness controls determine the character of the grain. Check grain at varying zoom levels to ensure that the character appears as desired.
Controls the amount of grain applied to the image. Drag to the right to increase the amount. Set to zero to disable grain.
Controls grain particle size. Specifying a value of 25% or higher can cause some image blurring.
Controls the regularity of the grain. Drag to the left to make the grain more uniform; drag to the right to make the grain more uneven.
Applies the postcrop vignette while protecting highlight contrast but can lead to color shifts in darkened areas of an image. Appropriate for images with important highlight areas.
Applies the postcrop vignette while preserving color hues but can lead to loss of detail in bright highlights.
Higher values restrict the adjustment to the area closer to the corners, lower values apply the adjustment to a larger area away from the corners.
Higher values increase the softening between the effect and its surrounding pixels, lower values reduce the softening between the effect and its surrounding pixels.
Adobe Camera Raw allows you to easily decrease or increase the amount of haze or fog in a photograph. Click in the Adjustment panel on the right to view the Basic panel and adjust the Dehaze slider control.
Controls the amount of haze in a photograph. Drag to the right to remove haze; drag to the left to add haze.
Radial filters in Adobe Camera Raw direct attention to specific portions of the image. To know more, see Radial Filter in Camera Raw.
Note: Dehaze is now available as a local adjustment. While working with the Radial Filter, Graduated Filter, or the Adjustment Brush, adjust the Dehaze slider control. For more information, see Make local adjustments in Camera Raw.