GrainLab™ Adobe Plugin | Film Grain Toolset

so far so good (really good)

With the dual scale option activated....the plug in does two 50% gray layers set up in overlay mode, each of those can be set up with a different type of grain and each of those can be set up (in blend if) just on the mid tones, darks, or lights. So you can achieve a really natural/rich grain like the film grain. You can prepare your own grain's recipe. TOP.